How to compare supplier quotations for engineering materials

Check scope and quantity first

Confirm each offer covers the correct material, specification, revision and quantity. A quote for 20 units cannot be treated as directly equivalent to a quote for 24 without accounting for the difference. Minimum orders and pack multiples may also change the quantity that must be purchased.

Where an offer covers a bundle of lines, understand whether the supplier will honour the price and freight if only part of the bundle is ordered. Ask for a revised offer rather than inventing a split cost.

Calculate comparable recorded costs

For a simple same-currency, same-quantity example, multiply the quoted unit cost by the quoted quantity and add known delivery charges. State clearly whether VAT, duties, insurance or other charges are included. Do not treat an unknown charge as zero.

Review dates and technical details

A supplier-confirmed date and a lead-time estimate are different pieces of information. Check when the estimate was given, whether it uses calendar or working days, and whether the date still needs confirmation. An apparent price advantage may not help if material arrives after the job needs it.

Flag part-number, material grade or specification deviations for technical review. A similar description is not proof of equivalence. If the proposed item is a different catalogue identity, resolve the engineering change and source the correct requirement rather than silently substituting it.

Record the decision, not just the ranking

A buyer may choose a more expensive offer for a valid reason, such as a confirmed delivery date or compliance with the required specification. Record the reason, the evidence considered and the person who approved the choice. Keep quote validity in view when creating the order.

Recon's development comparison keeps different currencies, line sets and quantity bundles separate. A buyer proposes a whole-offer choice and a manager reviews it; the software does not make an autonomous supplier selection.

A buyer's review checklist

Start by writing the comparison basis at the top of the review: the part, approved revision, quantity, unit, delivery destination and currency. Identify offers that differ before ranking prices. If a supplier's pack multiple changes the quantity, show the additional stock and obtain agreement that the overage is acceptable.

Keep a distinction between quoted cost and total expected commercial exposure. An offer may exclude VAT, duty, insurance or a service that another supplier includes. Where those amounts are not recorded, mark them unknown and ask the supplier. A precise-looking total built on assumptions is not a reliable comparison.

Finally, check the validity period and document the decision. If an offer expires or the approved engineering revision changes before purchasing is prepared, review the position again. A historical comparison remains useful evidence, but it should not automatically authorise a new order on stale terms.

Worked example: when a lower price needs more review

A fictional buyer needs 24 identical components. Supplier A quotes £42 each plus £35 freight, a recorded total of £1,043. Supplier B quotes £44.50 each plus £20 freight, a recorded total of £1,088. Those totals are comparable only if both offers cover the same 24 components, specification, currency and delivery destination, and if the same exclusions apply.

Suppose Supplier A estimates delivery in two weeks while Supplier B gives a confirmed date next week. The buyer should check whether those dates meet the job's need and whether the confirmed date remains valid. The £45 difference is useful information, but it does not by itself establish which offer the business should select.

Now suppose one offer omits freight. It is not a £0 charge: the buyer should obtain clarification before making a total-cost comparison. If another supplier quotes a pack of 30 instead of 24, record the actual offered bundle and seek approval for any extra quantity. Do not distribute freight across a partial bundle without an agreed basis.

Keep the supplier reference, validity and recorded reason for the proposed choice with the review. Before creating a purchase, check that the offer remains valid and that the job requirement and approved specification have not changed. If they have, seek a revised offer or repeat the appropriate review.

Frequently asked questions