Supplier A’s Fragrance Costs More but I Need Less of It — What Calculation Tells Me Which Fragrance Has the Lower Effective Formulation Cost?

Price minus wax, times grams: why it works

Fix the candle first: same jar, same fill weight, same wax, same wick, same cure. In this guide that is a 200 g candle (the series default; use yours) poured in Luxury Soy Wax CSI 464 at ₹507.40 a kilo, 0.5074 rupees a gram (worked example: your wax). The fill weight does not change when the load does; only the split between oil and wax moves. At 6%, the candle is 12 g of oil and 188 g of wax; at 9%, 18 g and 182 g.

So a lower load does two things at once. It saves oil, and it buys more wax. In pair 1 below the 6% candle holds 6 g more wax than the 9% candle, worth ₹3.04. That is small next to the oil, but it is never zero, and on a close comparison it decides the winner. Write it out:

The short form is the useful one: net the wax out of each oil price, then multiply by the grams each oil needs. Supplier A's oud is 1.43 times dearer per kilo; Woody Oud needs 1.50 times as much oil. The price ratio is just under the load ratio, so A should win, but only just: A wins by ₹0.52. The same arithmetic gives you two break-even numbers to carry into any supplier conversation:

Comparing two oils inside one catalogue, across six to eight scents and three loads, is a different job with its own table: comparing oils by cost per finished candle. This page is about the supplier decision, where the extra lines below matter as much as the oil.

Pair 1: a dearer oud at 6% against Woody Oud at 9%

The full bill of materials for the reader's case. Supplier A is an illustrative supplier at ₹6,500.00 a kilo whose oud, in this worked example, passed your test at 6%. The CSI arm is Woody Oud at ₹4,531.20 a kilo, which in the same worked example passed at 9% (a hypothetical result: run your own). Jar and box are your own supplier's figures, labelled; wick and wax are CSI prices.

On oil alone the CSI arm costs ₹3.56 more. The 6 g of extra wax in A's candle costs ₹3.04, which claws back part of it. Net: Supplier A is cheaper by ₹0.52 a candle, about ₹936.00 a year at 150 candles a month (worked example). Fragrance is under a third of this candle; the jar and the wax together are well over half. That is the first honest lesson of a supplier-level comparison: the oil line is rarely where a big rupee gap hides once both oils are priced at their approved loads.

Notice how small the margin of victory is relative to the inputs. Change Supplier A's approved load from 6% to 7% (one rung on a test ladder) and A becomes the dearer candle: 14 g at ₹6.50 is ₹185.38 in oil and wax, against ₹173.91. The decision lives inside the resolution of your burn test, which is why the test, not the quote, settles it.

Pair 2: when the cheaper oil does win

Same candle, same wax, a coffee scent. Supplier A's coffee is ₹5,200.00 a kilo (worked example) and passed at 7%. CSI's Roasted Coffee is ₹3,738.00 a kilo at 1 kg, and in this worked example passed at 9%.

Formulation cost: ₹167.18 against ₹159.63, a ₹7.55 gap in Roasted Coffee's favour, worth ₹13,590.00 a year at 150 candles a month. A would need to fall below ₹4,950.97 a kilo, or pass at 6.20% or less, to draw level. Unlike pair 1, this gap is several rupees wide, wide enough to survive the adders in the next section.

The pack you buy changes the answer

Price the CSI arm at the pack you will really buy. At the 100 g price (₹3.90 a gram) the Roasted Coffee candle costs ₹162.55 in oil and wax, so the gap narrows to ₹4.63. From 500 g it is ₹3.78 a gram, and the 1 kg is ₹42.00 cheaper than two 500 g packs, so on this oil the bigger bottle does pay. That is not true across our list: Woody Oud stops falling at 100 g, and on 20 of the 78 oils we sell in both 500 g and 1 kg, the 1 kg costs more than two 500 g packs. Check each oil's ladder before you assume a bigger pack is the saving.

The adders a per-kilo quote never shows

Formulation cost is the core of the comparison, not the end of it. Five more lines belong in a supplier-level calculation. Price each one for both arms, or say plainly that it is equal.

1. Wax displaced: already in the formula

Counted above: ₹3.04 a candle in the oud pair, ₹2.03 in the coffee pair. Leave it out and you overstate the dearer oil's disadvantage by exactly that much.

2. The wick may change with the load

A candle at 6% and a candle at 9% will not necessarily want the same wick: higher loads can make a flame smaller or sootier, and heavier oils commonly need a wick change. If your wick ladder lets the low-load candle step down from Eco C2 (₹9.44) to C1 (₹5.90), that arm gains ₹3.54 a candle. In the oud pair that is bigger than the whole formulation gap: Supplier A's lead would grow from ₹0.52 to ₹4.06. In the coffee pair it would cut Roasted Coffee's lead from ₹7.55 to ₹4.01. Treat this as a possibility to test, never a saving to bank in advance (the lower-load wick post).

3. Lot-to-lot variance shows up as rejects

A supplier whose lots vary in strength or colour costs you in candles you cannot sell, re-pours and complaints. Price it as a reject rate: cost per saleable candle = cost per poured candle ÷ (1 − reject rate). On a ₹269.35 candle, every extra percentage point of rejects adds ₹2.72 per saleable candle. Use your own records for each supplier; this page assumes 2% for both arms (worked example). CSI publishes no lot-variance data; ask about batch consistency for any oil on WhatsApp, and ask the same of every supplier (what to ask about batch consistency).

4. Minimum orders tie up cash

Suppose Supplier A sells only in 5 kg lots (worked example; use their real terms). At 150 oud candles a month you use 1,800 g of A's oil, so one order is 2.78 months of stock and ₹32,500.00 of cash. Held at your cost of money (1.5% a month, worked example) on an average of half the order, that is ₹243.75 a month, ₹1.62 a candle. Woody Oud is ₹4.53 a gram from 100 g up, so you can buy a 1 kg pack at a time: about ₹0.23 a candle on the same basis. For coffee: ₹1.30 against ₹0.19. Small, but real, and it always favours the supplier with smaller packs at a flat per-gram price. When an MOQ is large enough to matter, the working-capital side is the larger-MOQ post.

5. Documents and freight: gates and landed cost

Documentation is not a rupee line; it is a pass/fail gate. If you sell to retailers, corporate buyers or export, you will be asked for an MSDS and IFRA documentation for each oil. A supplier who cannot provide them fails, whatever the price. CSI shares MSDS and IFRA documentation on request on WhatsApp. Freight belongs in landed cost: add your real delivery charge per kilo from each supplier's invoices to P before you run the formula. CSI does not publish delivery charges, so confirm ours on WhatsApp rather than guessing.

Read the oud columns honestly: the holding cost tips the effective result ₹0.89 towards Woody Oud, but one extra point of rejects on either side swings it by about ₹2.72, and a one-size wick change swings it by ₹3.54. A sub-rupee gap with a two- to four-rupee error bar is not a result. The coffee gap survives: Roasted Coffee could carry 5.2% rejects before it lost to A at 2%.

The decision rule, in rupees a year

Three questions settle a supplier-level fragrance decision. One: is the effective gap per saleable candle bigger than one percentage point of rejects (₹2.72 here) plus one wick size (₹3.54)? Two: what is it worth in a year at your volume (gap × candles a month × 12)? Three: does it repay the test within about six months (judgement: long enough to be worth doing, short enough that nothing else changes first)? Switching costs beyond the test (relabelling, dead stock of the old oil, the risk premium) are worked through in the new-supplier switching-cost post; here we price only the test candles.

The coffee test breaks down as ₹780.00 for two 100 g bottles of Roasted Coffee (162 g used across the 8%, 9% and 10% candles), ₹218.40 of your current oil for the three controls, ₹1,114.25 of CSI 464 (2,196 g), ₹840.00 of jars, ₹188.80 for a 20-pack of C2, and ₹900.00 of labour. Sensitivity: at 60 coffee candles a month the same gap is worth ₹6,364.80 a year and the payback stretches to 7.6 months; at 500 a month it is ₹53,040.00 a year. Volume, not the per-candle gap, decides whether a supplier comparison is worth an afternoon.

The test gate before you change supplier

The calculation tells you whether a test is worth running. It never replaces the test. A different supplier's coffee or oud has a different composition, and that can change throw, flame, carbon build-up, colour and the load it needs. This page owns the money; the retest method belongs to the change-control and formulation series: comparing a ₹5,000 and a ₹3,500 oil at different loads for the change-control side of this exact comparison, whether a supplier change alone needs a new burn test (it does), the full list of what to retest when the oil changes, and which tests to repeat when you switch fragrance supplier.

What stays identical for the customer: the scent they recognise, the throw they expect at the distance they expect it, the burn time, and the colour of the wax. If any of those moves, the comparison is not between two suppliers of the same candle; it is between two different candles, and the price question becomes a product decision.

What to sample, and what to skip

The four products the worked arms use, chosen on page statements, price ladders and stock on 4 October 2026; CSI publishes no throw or burn data, so nothing is ranked on performance. Per-candle figures use a 200 g candle at 9% (18 g of oil, 182 g of wax).

Skip for this decision: the 1 kg Woody Oud as a "saving" (it is ₹4.53 a gram at 100 g too), any 10 kg wax bag bought for a discount (CSI 464 is flat per gram from 1 kg), and the perfume-grade "inspired" listings: where their pages quote usage rates of 15–25%, those are perfume rates, not candle loads, and most of these listings sit near or above double Woody Oud's ₹4.53 a gram, priced almost flat across sizes, so neither a bigger pack nor a modest load cut brings them near a candle-grade oil's cost per candle.

Frequently asked questions