How do I compare two diaper supplier quotations when the specifications differ?

Convert both diaper supplier quotations to cost per 1,000 pieces at the same size band and pack count, then add freight, documentation and payment cost back in before you compare. Two quotes that look ten percent apart are frequently the same price, or twenty percent apart, once carton counts, sizes and absorbency are normalised. The comparison is arithmetic, and the arithmetic has to be done on identical units.

Most first-order mistakes in this category come from comparing the number at the bottom of the page: a quotation comparison that stops at the total is a comparison of packaging, not of product. A carton price is a packaging unit, not a product unit, and no two suppliers pack the same way. The fix is a one-page normalised sheet that both suppliers can look at, which also happens to be the most effective negotiating document a buyer can hold.

Why can't two diaper supplier quotations be compared per carton?

Because the carton is a container, not a unit of use. One supplier may put four packs of forty in a carton and another six packs of twenty-four, and the second carton holds fewer diapers while looking cheaper. Add a size difference — medium versus large — and the per-carton comparison stops carrying any information at all.

The same trap appears in the shipping documents. A 20GP of tape diapers holds roughly 48,000 pieces at a typical pack configuration, but that number moves with carton dimensions and compression. If one quote assumes 48,000 pieces per container and another assumes 42,000, the freight per piece differs before you have discussed price.

What is the first normalisation step?

Rebuild every quote into cost per 1,000 pieces, at one size band, with one pack count, ex-works or FOB as stated. Then rebuild the second quote into the same frame. Do it on paper, not mentally, and keep the original quote beside it so the supplier can see that nothing was invented.

1. Take the piece count per pack and per carton from the quote, not from the brochure.
2. Divide the carton price by the pieces per carton, then multiply by 1,000.
3. Note the size band and the diaper weight in grams.
4. Record the SAP load if it is stated, or ask for it.
5. Repeat for the second quote, same size, same pack count.

At this point the two numbers are comparable on piece price alone. Everything after this step is about adjusting for what the price does not include.

How do you put a price on the absorbency difference?

Convert the specification into grams per piece. The SAP load and the core weight tell you how much absorbent material is in the product, and that is the line item where a cheap quote is usually cheap. A diaper with less SAP costs less to make and shows up as a thinner core, a slower absorb time and more rewet under pressure.

Then ask what the market pays for that difference. In a value tier, a 20-gram core may be exactly right and the cheaper quote is the better buy. In a tier where the retailer is positioning against imported Japanese brands, a thin core will generate complaints that cost more than the saving. Price the difference against the retail price band the product must sit in, not against the supplier's cost structure.

This is also where country-of-origin claims get tested. A quotation that leans on a brand licence should be checked against what the licence actually covers, because the piece price includes it and the retailer will ask for the document.

Which hidden lines must be added back before comparing?

Freight and terminal handling are the obvious ones. The less obvious ones are the ones that decide the outcome.

• Carton and pallet cost. Some quotes are carton-included, some are not, and palletisation changes the loaded quantity per container.
• Documentation and certificate cost. Origin certificates and any testing the destination requires are sometimes billed separately.
• Payment-term cost. A deposit-and-balance structure ties up capital; a longer credit term from one supplier has a real value that belongs in the comparison.
• Minimum-order penalty. A low piece price on a minimum you cannot reach is a higher price on what you actually buy.
• Price validity. A quote valid for thirty days and a quote valid for six months are not the same offer in a market where input costs move.

Add each line on a per-1,000-piece basis so the total stays comparable. The quote that looked cheaper often stops being cheaper at the third line.

How do you compare on quality-adjusted cost?

Multiply the defect rate you have actually observed, or the rate the supplier will warrant, by the cost of handling a claim. If one percent of cartons arrive with failed seals and each claim costs a replacement plus a return plus the retailer conversation, that one percent is worth more than the price difference you were negotiating.

Ask both suppliers for the same three things: a retained sample from the last production run, the defect rate on the last twelve months of shipments to comparable markets, and the claim procedure in writing. A supplier who cannot produce a retained sample is telling you something about its process control.

What should you send back to both suppliers?

A quotation comparison only works when both sides look at the same specification, so send the normalised sheet rather than a complaint. It should show both quotes rebuilt to cost per 1,000 pieces at one size, the added lines, the absorbency difference in grams, and one question: re-quote to this specification.

Two things usually happen. One supplier discovers it was quoting a lighter product and re-quotes at the same performance level, which closes the gap honestly. The other holds its price and explains what the extra buys, which is also useful information. Either way you end up comparing the same product, and you have established that you read specifications rather than totals — which changes how the next three negotiations go.

Frequently asked questions

Why is a per-carton price misleading?

Because cartons hold different piece counts and sizes. A cheaper carton can carry fewer diapers, which makes the unit cost higher once both are normalised.

What unit should I compare on?

Cost per 1,000 pieces at one size band with the same pack count. That removes most of the confusion from differing carton and pack configurations.

How do I value an absorbency difference?

Convert SAP load and core weight to grams per piece, then price the gap against the retail band the product must sit in rather than against supplier cost.

Should I always choose the cheaper quotation?

No. A lower piece price with a higher defect rate or a shorter credit term can cost more across a year than a slightly higher price with stable quality.

Bottom line. A diaper supplier comparison is only meaningful once both quotes are rebuilt into cost per 1,000 pieces at one size, with freight, documentation, payment and minimum-order effects added back, and with the absorbency gap priced in grams. Do that on one page, send it to both suppliers, and ask for a like-for-like re-quote. Prices, MOQ and terms referenced here are indicative and subject to formal quotation.

Distributors who want a specification sheet to put beside a competing quote can request one with pricing and free samples through the partner programme, or start with the distributor application if the territory is not yet assigned. The wholesale price, MOQ and margin guide explains how piece price converts into distributor margin, and product specifications sit on the diaper page.

Sources and further reading

• International Trade Centre, Market Access Map, applied tariffs and rules of origin by product and market — macmap.org
• ASTM International, standards for absorbency and rewet testing of absorbent hygiene products — astm.org
• International Organization for Standardization, catalogue of standards for absorbent hygiene products — iso.org/standards

Test methods and defect-rate definitions should be agreed in the purchase order; confirm tariff treatment for the specific origin and destination with a customs broker.