Last updated: 28 July 2026. This is sourcing guidance from a trading company — the quoting patterns below are what we see in day-to-day work, not a claim about any particular supplier or a substitute for your own technical review.
Three quotes on a screen look like one decision with three prices. They are usually three different products, priced honestly, against three different readings of what you asked for. Below: the nine places the difference hides, how to normalise the request so the answers become comparable, and what usually happens to the ranking once you do.
Where the difference hides
Nine places, and none of them appear as a line item.
- Material grade. The single most common gap. Two grades that look identical on a datasheet, photograph the same, and behave differently in the customer's hands twelve months later.
- Wall thickness, weight, gauge. Quoted to a tolerance you never set, which means quoted to whatever tolerance is cheapest to hold.
- Component origin. The visible part matches. The fastener, motor, coating or seal doesn't — and those are the parts that fail.
- Finish and process steps. A polishing pass or a coating layer removed. Invisible in a quote, obvious in a sample, expensive in a container.
- Accessories and inclusions. A cable, adaptor, insert or manual quietly out of scope, to be discovered at packing.
- Packaging. Retail-ready versus plain brown. Carton board weight. Inner protection, or none. This alone can account for a gap that looks like a discount.
- Testing and certification. Assumed to be your cost, and unstated. Whoever left it out is cheaper on paper and identical in reality.
- Tooling. Amortised into the unit price, or billed separately later, or paid for by you and owned by them.
- Terms. EXW against FOB against DDP, lined up in one column and compared as though they were the same number.
A supplier quoting this way isn't necessarily deceiving you. They are answering the question you asked, and a vague question gets answered at the cheapest defensible interpretation — because the ones who interpret it expensively lose the order.
A vague spec is a discount you didn't ask for, granted to you in materials, thickness and steps you will not see until the goods land.
The fix
Normalise the request, not the answers.
You cannot reconcile three quotes after the fact by arguing about them. The gaps sit in what each supplier assumed, and assumptions are only visible once the same specification is put to all three. Rewrite the request, then re-issue it.
- Specify material grade explicitly. The standard and the designation, not the family name.
- Give tolerances, not adjectives. "Sturdy" is priced at whatever sturdy costs least.
- Name components and their origin. Especially anything that moves, heats, seals or carries current.
- State the packaging format. Retail or plain, carton board weight, inner protection, units per carton.
- Say which certifications are in scope and who pays for them. Compliance testing is a real cost and belongs in the quote, not after it.
- State tooling ownership and how it is amortised. See prototyping and tooling for what that usually looks like.
- Quote everyone on the same Incoterm. One term, chosen by you, applied to all three.
Then require the quote broken out
- Unit price At the stated volume, on the stated spec.
- Tooling Cost, ownership, and whether it is amortised or invoiced.
- Packaging Priced as its own line, at the stated format.
- Testing What is included, what is excluded, who pays.
- Freight On the one Incoterm you set for all three.
Re-quoting on a normalised spec routinely reorders the ranking. The cheapest quote is frequently the most expensive product — and the supplier who looked expensive was often the only one reading the brief the way you meant it.
What we do
Send the three quotes, and whatever spec you issued.
We return a like-for-like comparison: the three restated on one specification, a note on what each supplier assumed where you left the question open, and a plain read on which gaps are genuine cost differences and which are just quoting style. Redact the supplier names if you'd rather — the analysis works the same on anonymised documents.
Free. Turnaround confirmed when you send them. Yours to keep. If the honest answer is that one of your own three is already right, that is what the comparison will say, and there is nothing to buy from us afterwards.
If you want the same discipline applied earlier — before the quotes exist — that is supplier research and procurement management. If you want it applied later, at the point the goods are packed, that is the inspection before final payment.