How to Plan Candle Inventory for Diwali
Aktie
How much raw material does a 400-candle festive plan need? At the fill weights used here, 36.5 kg of wax reaches the candles, 38.33 kg is melted after a 5% wastage allowance and 39 kg is bought — ₹19,788.60 of Luxury Soy Wax CSI 464. Fragrance at 8% of wax weight is 3.07 kg, bought as 3.4 kg across four scents (₹16,308.64). Vessels, wicks and finishing take the CSI half of the plan to ₹70,613.04, or ₹176.53 a candle.
How many scents should a festive range carry? Three or four for a plan of this size. Every extra scent is another bottle you buy in full, another test burn and another line of stock that can be left over the morning after the festival. Adding a fifth scent to this 400-candle plan costs ₹1,593.00 more in oil and produces no extra candles. Depth beats range at Diwali: buyers choosing a gift want an obvious answer, not a menu.
When do I need to order materials for Diwali 2026? Working back from 8 November 2026: the last sensible pour for a full 21-day cure is around 11 October, and the last pour of any kind is around 22 October. Materials want to be on your bench a clear week before the first pour, which puts the main order in the second half of September and the top-up order by the first week of October. Confirm stock on WhatsApp before you fix pour dates.
What you are actually planning for
Diwali 2026 falls on 8 November 2026. Counting from 15 September, that is 54 days — which sounds generous until you lay the real constraints over it. Soy container candles want 14–21 days of cure before the throw settles, and the buying does not wait for the festival itself: gift-set orders, corporate enquiries and the first wave of retail all land in the two to three weeks before the day. In practical terms, the candles you intend to sell need to be poured by about the third week of October, which leaves roughly five usable pour weeks from today.
That is the whole reason festive planning is an inventory problem rather than a sales problem. You are not deciding what will sell. You are deciding what will exist. A candle you pour on 1 November is a candle nobody can buy as a festive candle, however good it is, because it has not cured and the window has closed around it.
Three demand streams behave differently, and a plan that ignores the difference tends to end up with the wrong stock in the wrong format:
| Stream | When it decides | What it wants | What it does to your plan |
|---|---|---|---|
| Corporate and bulk gifting | Late September to mid-October | One scent, one format, consistent, invoiced, documented | Largest single commitment; ask for a confirmed quantity before you buy against it |
| Retail and D2C | Roughly the last three weeks | Gift-ready single candles and small sets, several scents | Needs range; sells in dribs and drabs, so safety stock matters |
| Markets, exhibitions and pop-ups | Stall dates fixed weeks earlier | A visible price point and volume on the table | Eats stock quickly and unpredictably; plan a cheaper format for it |
| Repeat and referral | Any time from now | The scent they bought last time | Argues for carrying last year's bestseller rather than a fresh range |
Most small Indian candle brands run all four to some degree. The mix matters because it decides your format split: a plan that is 80% corporate can be one scent in one jar, and a plan that is 80% retail cannot. Write your own rough percentages down before you decide the number — they are the difference between a range that sells out and a range that sells half of everything.
Two honest ways to set your Diwali number
Method A — from last year's sell-through. If you sold festive candles last year, you already own the most reliable number available to you. Take the units you actually sold in the festive window, not the units you made. Adjust for the two things that changed: your audience and your channel mix. Then check that the answer fits in the pour weeks you have.
| Step | Working | Units |
|---|---|---|
| Last festive window, units sold | What actually left the shelf, excluding gifts and samples | 240 |
| Stock-out adjustment | Sold out about a week early on two of four scents, so demand was higher than sales | +40 |
| Audience growth | Your own follower, repeat-customer or enquiry growth since — use a real number | +20% |
| Channel change | One extra market stall this year, no new retail partner | +50 |
| Indicative demand | (240 + 40) × 1.2 + 50 | 386 |
| Capacity cap | Five pour weeks at a realistic weekly output, minus one week of slack | 400 |
| Plan | The lower of the two, rounded to whole packs | 400 |
The stock-out adjustment is the step most makers skip, and it is the one that quietly costs the most. If a scent sold out nine days before the festival, its true demand was not the number you sold — it was somewhere above it. Equally, if a scent sat unsold until December, do not carry it forward at the same weight because you like it.
Method B — from capacity, for a first festive season. With no history, forecast nothing. Build the largest number you can finish comfortably, make it small enough that selling out is plausible, and let the sell-through become next year's Method A input. The arithmetic runs in the other direction: batch size, pours per day, days available, minus slack.
| Constraint | Working | Result |
|---|---|---|
| Melt capacity per batch | A Mini Electric Wax Melter at 1 litre holds roughly 800–900 g of wax per melt | About 6 gifting jars or 13 votives a batch |
| Batches in a pour session | Three to four melts in an evening once the routine is set | About 20–25 jars a session |
| Sessions a week | Three evenings and one weekend day | About 90–100 candles a week |
| Pour weeks available | Second half of September to the third week of October | About five |
| Ceiling | Five weeks at 90–100 | 450–500 |
| Slack for reruns and failures | One week held back | −90 to −100 |
| First-year plan | Round down, stay comfortable | 350–400 |
Both methods land in the same place for this page, so the worked plan from here on is 400 candles. If your own arithmetic lands at 120 or at 1,200, every ratio below still holds; only the pack counts change. And if the melter is the constraint rather than your time, that is a fixable one: the 1 litre Mini Electric Wax Melter is ₹2,360.00 and the imported Electric Wax Melter starts at 10 kg capacity, which changes a pour evening completely — but it is a capital decision to make before the season, not during it.
Splitting the number: formats, scents and price points
Four hundred candles in one format and one scent is a production run. Four hundred candles in three formats and six scents is twenty-two separate small batches, each with its own test burn, its own leftover oil and its own chance of being the one that does not sell. The split is where most of the margin and most of the risk live, so decide it deliberately.
| Format | Units | Fill | Vessel | Materials each | Job it does |
|---|---|---|---|---|---|
| Gifting jar · Red Glass Jar with Golden Lid | 150 | 130 g | ₹107.00 each at ten | ₹243.92 | The photograph, the gift, the highest price point |
| Votive trio · Clear Glass Votive Jar 70 gram | 150 | 60 g | ₹31.86 each at ten | ₹96.24 | Sets of three at a gift price; 50 sets from 150 candles |
| Market tin · Tin Containers 85 gram | 100 | 80 g | ₹70.80 each at twelve | ₹154.52 | Travels without breaking; the stall and add-on price point |
| Total | 400 | 36.5 kg of wax | — | ₹176.53 average | Three price points, one range |
Three formats is the practical maximum for a plan of this size, and the reason is not production — it is presentation. Each format needs its own photograph, its own price, its own box and its own stock count. The votive trio is the one worth arguing about: 150 votives sold as 50 sets of three is ₹288.71 of materials per set, and it gives you a gift-shaped product without a new vessel, a new label size or a new photograph beyond the set shot.
On scents, the honest maths is short. A festive range needs enough choice that a buyer feels they chose, and no more. Four scents across 400 candles means an average of 100 candles each, which is a real batch. Six scents means 67 each, three extra bottles bought in full, and two more test burns in a fortnight that has none to spare. Adding a fifth scent to this plan costs ₹1,593.00 in oil alone and produces not one extra candle.
| Scent | Units | Wax carried | Oil at 8% | Packs bought | Cost |
|---|---|---|---|---|---|
| Sandalwood · temple-warm, the safest festive lead | 140 | 15.70 kg | 1,318.8 g | 1 kg + 4 × 100 gm = 1.4 kg | ₹7,037.52 |
| Rajnigandha · Indian floral, strongest in the votives | 100 | 6.00 kg | 504.0 g | 500 gm + 100 gm = 600 g | ₹2,800.00 |
| Apple Cinnamon · warm spice, sells to families | 90 | 6.20 kg | 520.8 g | 500 gm + 100 gm = 600 g | ₹2,846.16 |
| Woody Oud · the gifting scent for men | 70 | 8.60 kg | 722.4 g | 500 gm + 3 × 100 gm = 800 g | ₹3,624.96 |
| Total | 400 | 36.50 kg | 3,066 g | 3.4 kg bought | ₹16,308.64 |
Two things in that table are worth copying into your own plan whatever scents you choose. The first is that oil is bought against wax weight, not against candle count — 140 Sandalwood candles need more oil than 140 Rajnigandha candles because they are bigger candles. The second is that pack ladders differ. On Sandalwood the per-gram rate is ₹5.03 at 100 gm and ₹5.03 at 1 kg, so you can buy exactly what the plan needs without paying for the privilege. On British Rose the rate keeps falling to the top of the ladder — ₹3.19 a gram at 500 gm against ₹3.07 at 1 kg — so if a scent like that is in your range, round the purchase up rather than down.
Two ceilings govern the load in every one of those batches, and the lower one wins. The CSI 464 page states a fragrance load of up to 10% of total wax weight; each oil page states its own candle usage range. The 8% used throughout this plan sits inside both for the oils named here, but check the page of any oil you swap in, because a range that stops at 6% turns your costing and your test burns into different numbers.
Turning 400 candles into one material order
Every festive plan converts to materials the same way, in four steps. Do them in this order and the arithmetic is unambiguous; do them out of order and you end up buying oil against candle count, which is the single most common costing error in a festive run.
| Line | In the candles | Allowance | Packs to buy | Cost |
|---|---|---|---|---|
| Wax · CSI 464 | 36.50 kg | 5% → 38.33 kg | 3 × 10 kg + 1 × 5 kg + 4 × 1 kg | ₹19,788.60 |
| Oil · Sandalwood | 1,318.8 g | in the 5% above | 1 kg + 4 × 100 gm | ₹7,037.52 |
| Oil · Rajnigandha | 504.0 g | in the 5% above | 500 gm + 100 gm | ₹2,800.00 |
| Oil · Apple Cinnamon | 520.8 g | in the 5% above | 500 gm + 100 gm | ₹2,846.16 |
| Oil · Woody Oud | 722.4 g | in the 5% above | 500 gm + 3 × 100 gm | ₹3,624.96 |
| Vessel · Red Glass Jar with Golden Lid | 150 | 4% → 156 | 16 × Pack of 10 = 160 | ₹17,120.00 |
| Vessel · Clear Glass Votive Jar 70 gram | 150 | 4% → 156 | 16 × Pack of 10 = 160 | ₹5,097.60 |
| Vessel · Tin Containers 85 gram | 100 | 4% → 104 | 9 × Pack of 12 = 108 | ₹7,646.40 |
| Wicks · Eco C1 Thin | 250 | 4% → 260 | 5 × 50 + 1 × 10 = 260 | ₹1,534.00 |
| Wicks · Eco C2 Thick | 150 | 4% → 156 | 100 + 50 + 20 = 170 | ₹1,604.80 |
| Wick stickers · sheets of 40 | 400 | 4% → 416 | 11 sheets = 440 | ₹1,100.00 |
| Care labels · roll of 500 | 400 | 4% → 416 | 1 × 500 roll | ₹413.00 |
| CSI materials | 400 candles | — | 12 lines | ₹70,613.04 |
| Cartons, printed labels, ribbon, filler | 400 sets | — | not sold by CSI | your figure |
| Inbound freight and outbound delivery | 39 kg in, 400 units out | — | not sold by CSI | your figure |
| Stall fees, listing fees, labour | five pour weeks plus selling | — | not sold by CSI | your figure |
The vessel line is ₹29,864.00 of a ₹70,613.04 order — more than the wax and the fragrance together, which is normal for container candles and worth knowing before you choose a jar you cannot photograph. The wax line, at ₹19,788.60, is smaller than most first-time planners expect: a festive season's worth of soy for a 400-candle brand is roughly the cost of one good gifting-jar pack multiplied by sixteen.
Colour and finish are optional lines this plan leaves out on purpose. A festive range often wants them: Gold Mica is ₹234.82 for 20 gm and red Candle Dye Liquid is ₹236.00 for 15 gm, both of which go a long way at the doses used in candles. Add them if the look needs them, but add them as a line with a number rather than as an afterthought at checkout.
The order dates that still work from today
A festive material order is not one order. It is a main order that covers the committed pour, and a top-up order that covers whatever the first two weeks of selling tells you. Splitting them this way is what keeps a plan flexible without risking the season, and the dates below are the ones that still work counting from 15 September 2026.
| By | Order | Why this date | If you miss it |
|---|---|---|---|
| Third week of September | Main order: wax, all four oils, all vessels, wicks, stickers | Everything for the committed pour on the bench before the first pour week | Order anyway; shift the first pour week and shorten the second wave |
| End of September | Samples of anything new — a vessel, a scent you have not burned | You still have time for one test burn and a decision | Drop the new item from the festive range and keep it for the next season |
| First week of October | Top-up: extra oil for the scent that is clearly leading, extra vessels | Arrives in time for the second pour wave | Reallocate wax to the scents you already have in stock |
| Second week of October | Last useful top-up on counted lines — wicks, stickers, labels | Small, light lines that can still reach a pour week | Substitute within what you hold; do not pour without a tested wick |
| Third week of October | Nothing you need cured | This is a pour deadline, not an order deadline | Sell what is cured and take orders for later delivery instead |
Notice what is not in that table: a promised delivery time. CSI does not publish delivery timelines and this page will not estimate one. What the store does publish is stock, and what a message on WhatsApp gets you is confirmation of the lines you are about to build a season on. At festive time that confirmation is worth more than a day saved, because every line on the plan above is a line that other candle makers are ordering in the same fortnight.
Safety stock, sell-through and what happens on 9 November
Two questions decide whether a festive season ends well: how much stock you hold back for the last week, and what happens to whatever is unsold the morning after. Both are answered at planning time, not in November.
On safety stock, the useful rule is to hold the buffer in your best-selling format rather than spreading it across the range. A brand that keeps 30 gifting jars back for the final week can fill a last-minute corporate top-up, replace a breakage on a courier delivery, and still sell the remainder at full price on the day. A brand that keeps three of everything back has a shelf of samples and nothing to sell.
| Held back | Units | Purpose | What it costs you if unused |
|---|---|---|---|
| Gifting jars | 25 | Late corporate top-ups, courier breakage, the last two days of retail | ₹243.92 of materials each; sells all year as a non-festive scent |
| Votive trios | 5 sets (15 candles) | Replacements and add-on sales at the stall | ₹288.71 of materials a set |
| Market tins | 10 | Stall stock that does not break in a bag | ₹154.52 each |
| Unpoured wax and oil | About 3 kg of wax, 250 g of oil | The genuine buffer: pours into whatever is selling | Nothing — it keeps for the next season |
That last row is the whole argument for buying materials rather than building stock. Three kilograms of CSI 464 and 250 g of oil held unpoured is roughly 23 more gifting jars you can produce if a corporate enquiry lands on 10 October — and if nothing lands, it is wax and oil you use in December, in January and for wedding-season orders in the new year. The same money spent on 23 finished candles in a festive-red jar is 23 candles you will be discounting in the week after the lamps come down.
On leftovers, the honest answer is that some scents survive the festival and some do not. Sandalwood, oud, vanilla and rose sell year round in India; they simply sell as candles rather than as Diwali candles once the lamps come down. Anything tied to a festive-only look — a jar with a Diwali motif, a label with a year on it, a set boxed as a festive set — has a much shorter shelf. That argues for a plain vessel and a festive outer box rather than a festive vessel: the box is your figure, the jar is your inventory.
| Leftover | Shelf life in practice | Best move |
|---|---|---|
| Sealed wax | The CSI 464 page states 60 months in cool, dry storage | Nothing. Store sealed, away from sunlight and moisture, and use it next |
| Opened fragrance oil | Keeps well sealed, upright, away from heat and sunlight | Plan it into the next range; buy smaller packs of anything seasonal |
| Plain-vessel candles in a year-round scent | Sells at full price all year | Rewrap and keep listing; no discount needed |
| Festive-labelled or boxed candles | Sells until the last day, then drops sharply | Clear in the final week rather than after; plan fewer of them |
| Surplus festive vessels | Indefinite, but dated-looking stock ages badly | Buy vessels to the plan plus spares, not to the pack discount |
One last piece of planning arithmetic, clearly labelled illustrative because retail prices are yours to set. If the 150 gifting jars sold at ₹749.00, the 50 votive trios at ₹899.00 and the 100 tins at ₹349.00, the plan would gross ₹1,92,200.00 against ₹70,613.04 of CSI materials — a gap of ₹1,21,586.96 before a single rupee of packaging, courier, stall fee, platform commission or labour comes out of it. Those are not profit figures and this page will not pretend they are. They are the reason the blank rows in the table above matter as much as the priced ones.
The festive lines CSI cannot price for you
CSI sells wax, fragrance, wicks, vessels, dyes and mica, finishing items, tools and equipment. It does not sell gift boxes, printed labels, ribbon, tissue, shrink wrap, mailers or courier services, and publishes no rates for freight, labour, electricity, stall rent, photography or advertising. At festive time several of those are bigger decisions than the wax. Give each one a row, a quantity and a real quote from whoever supplies it.
| Row | Quantity at 400 candles | What to ask for | Cost |
|---|---|---|---|
| Printed labels, front and base | 400–850 labels | Per-piece price at 500 and at 1,000 | your figure |
| Gift boxes for the jars and the trios | 150 single boxes, 50 trio boxes | Per-piece at your two sizes, plus a sample charge | your figure |
| Ribbon, tissue, filler, greeting card | 200 gift sets | Per-set cost of the whole presentation | your figure |
| Outer cartons for dispatch | 15–30 depending on pack-out | Per-carton price and inside dimensions | your figure |
| Inbound freight on 39 kg plus 420 vessels | One or two consignments | Your charge at checkout | your figure |
| Outbound courier or delivery | Up to 400 parcels, or fewer bulk drops | Per-parcel rate at your average weight | your figure |
| Market stall or exhibition fees | Your booked dates | Per-day rate and table size | your figure |
| Platform, gateway or marketplace fees | On whatever sells online | Your platform statement | your figure |
| Your own labour | Five pour weeks plus selling and packing | A daily rate, even if you pay it to yourself | your figure |
| Your own costs | — | — | your figure |
| CSI materials | 400 candles | This page | ₹70,613.04 |
The row that decides the season is usually the gift box. A candle in a printed box sells at a gifting price; the same candle in a bubble-wrapped mailer sells at a candle price. That is a packaging decision with a margin attached, and it has a long lead time of its own — printers want artwork weeks in advance in October, because every small brand in India is printing something. Get the quotes while you are ordering materials, not after the candles have cured.
The row that most often gets forgotten is labour. Five pour weeks, a fortnight of finishing and labelling, and then the selling itself is a serious amount of somebody's time. Price it. A festive season that only worked because nobody was paid is a season you cannot repeat and cannot hand to anyone else — which is exactly the trap a growing candle brand needs to avoid before it takes on a corporate order it has to fill twice.
Finally, a sanity check on the finished plan. Does every material line trace to a pack on a product page. Is fragrance calculated from wax weight rather than candle count. Are the 5% and 4% allowances written down as assumptions rather than buried. Is every vessel line confirmed for depth before you photograph the range. And does the sheet end in two totals — ₹70,613.04 of CSI materials and your own rows underneath. A festive plan that ends in one number has an invented figure in it somewhere, and November is an expensive month to discover which one.
CANDLEMAKINGSUPPLIESINDIA supplies raw materials, not finished candles, and the honest version of festive planning says two things a supplier would rather not say. The first is that the correct order is often smaller than the one you were about to place: a range of six scents at this volume buys bottles you will still be looking at in December, and three scents sold deep will out-earn it. The second is that materials are the easy half. Cartons, printed labels, ribbon, filler, courier, marketplace fees and your own labour are not sold by CSI and no rate for them is published here, so they appear as blank rows you fill in yourself.
Every price on this page is from live CSI stock in September 2026 and the linked product pages are authoritative. Per-kilogram, per-gram and per-unit rates are derived from the pack variants named beside each figure. Product-page specifications are quoted as such: the Luxury Soy Wax CSI 464 page gives 80–90°C as the working range for melting and pouring, states a fragrance load of up to 10% of total wax weight and a shelf life of 60 months in cool, dry storage away from sunlight and moisture; oil pages state their own candle usage ranges, and where a wax ceiling and an oil range differ the lower governs. The 400-candle plan, its fill weights, the 5% wastage and 4% spares allowances and every retail price shown are illustrative planning figures, labelled where they are used and not CSI data. Listed stock depth moves as orders are placed, and no delivery time, freight rate, minimum order or discount is stated here because none is published.
WhatsApp +91 7397976926 for bulk pricing, to confirm listed depth on a wax grade, an oil or a jar before you commit a festive plan to it, for GST invoicing, or for MSDS and IFRA documentation a corporate gifting buyer asks for.
Frequently asked questions
- Best Candle Fragrance Oils for Diwali Collections
- Five Diwali Candle Fragrances That Can Become Bestsellers
- How to Plan Fragrance Inventory Before the Festive Season
- How to Create a Festive Candle Collection Without Buying Too Many Oils
- Three-Scent Candle Gift Set Ideas for Every Indian Festival
- The 12-Month Candle Business Calendar — How Indian Candle Brands Plan Year-Round Revenue in 2026
- How Much Fragrance Oil Does a Candle Business Need?
- Why Your Candle Needs A 14-Day Cure
Customer reviews: The six reviews at the top of this page are genuine, published Judge.me reviews left by CSI customers on their product pages. Names, star ratings, dates and products are as recorded by Judge.me. One longer review is shortened with an ellipsis; wording is otherwise unedited. Two are not recorded as a verified purchase — shown as recorded. Not recorded by Judge.me as a verified purchase, so shown without a verified-buyer badge: Arzoo Vyas, Chanpreet kaur. No location is shown against any review because Judge.me does not store one.
Figures verified September 2026 (CSI live pricing). The plan costed on this page is illustrative: 400 candles as 150 gifting jars at a 130 g fill in the Red Glass Jar with Golden Lid, 150 votives at 60 g in the Clear Glass Votive Jar 70 gram (sold as 50 sets of three) and 100 tins at 80 g in the Tin Containers 85 gram, all in Luxury Soy Wax CSI 464 at 8% of wax weight, one Eco Candle Wick, one wick sticker and one care label each. Wax in the candles 36.50 kg, melted 38.33 kg after a 5% wastage assumption, bought 39 kg; fragrance 3,066 g needed and 3.4 kg bought across four scents; counted lines carry a 4% spares assumption. CSI materials ₹70,613.04, or ₹176.53 a candle. Live prices used, September 2026: Luxury Soy Wax CSI 464 500 g ₹260.00, 1 kg ₹507.40, 5 kg ₹2,537.00, 10 kg ₹5,074.00; Luxury Soy Wax Chunks 10 kg ₹5,999.00; Premium Coconut Soy CSI 468 10 kg ₹6,370.00; Eco Soy CSI 400 5 kg ₹1,996.00; Sandalwood Fragrance Oil 100 gm ₹502.68 and 1 kg ₹5,026.80; Rajnigandha 100 gm ₹500.00, 500 gm ₹2,300.00 and 1 kg ₹4,460.00; Apple Cinnamon Fragrance Oil 100 gm ₹474.36 and 500 gm ₹2,371.80; Woody Oud Fragrance Oil 100 gm ₹453.12 and 500 gm ₹2,265.60; British Rose Fragrance Oil 500 gm ₹1,593.00 and 1 kg ₹3,068.00; Citrus Lemon Fragrance Oil 1 kg ₹2,832.00; Dark Vanilla Fragrance Oil 1 kg ₹7,646.00; Red Glass Jar with Golden Lid Pack of 10 ₹1,070.00; Clear Glass Votive Jar 70 gram Pack of 10 ₹318.60; Tin Containers 85 gram Pack of 12 ₹849.60; Eco Candle Wicks Thin (C1) 10 for ₹59.00 and 50 for ₹295.00, Thick (C2) 20 for ₹188.80, 50 for ₹472.00 and 100 for ₹944.00; Candle Wick Stickers 40 for ₹100.00; Candle Care Stickers Roll 500 for ₹413.00; Gold Mica 20 gm ₹234.82; Candle Dye Liquid red 15 gm ₹236.00; Pen Thermometer ₹354.00; Mini Electric Wax Melter 1 litre ₹2,360.00; Steel Pouring Pitcher 600 ml ₹708.00. Product-page specifications quoted: the Luxury Soy Wax CSI 464 page gives 80–90°C as the working range for melting and pouring, states a fragrance load of up to 10% of total wax weight and a shelf life of 60 months in cool, dry storage away from sunlight and moisture. Illustrative retail prices used only in the worked example: ₹749.00 a gifting jar, ₹899.00 a votive trio, ₹349.00 a tin. Cure of 14–21 days is general practice for soy container candles; the Luxury Soy Wax Chunks page states a minimum of 48 hours and ideally one to two weeks. Diwali 2026 falls on 8 November 2026 and this page is written from 15 September 2026. Fill weights, pour-week outputs, demand percentages, wastage and spares allowances are planning assumptions, not measured data. Prices and availability change — the linked product pages are always authoritative.