Establish the measurement and quote basis
Record SKU revision, material, dimensions and basis, accepted quantity, price unit, currency, tooling, setup, freight, validity and supplier exceptions. Unknown is not confirmed zero.
Record the SKU, date, source document and unit beside the observation. Mark an estimate as provisional so it cannot be mistaken for supplier-confirmed data.
Worked purchasing example
Offer A: EUR 0.20 × 10,000 plus EUR 150 freight = EUR 2,150. Offer B: EUR 0.19 × 10,000 plus EUR 300 setup and EUR 100 freight = EUR 2,300. The lower unit price costs EUR 150 more for this job.
These figures are illustrative arithmetic, not market prices or a promised saving. Replace them with measurements and offers covering your actual job.
Turn the result into a decision
Ask suppliers to confirm excluded charges before ranking offers. Group technically equivalent offers; show mismatches and unresolved charges alongside any provisional totals.
Use the linked calculator to check the same boundary, then include complete known order charges in comparison. Preserve unresolved items in the specification rather than replacing them with zero.
Common questions
Can I compare an incomplete offer?
You can calculate a clearly labelled provisional scenario, but the ranking is conditional. Confirm missing charges and specification exceptions before treating the result as a purchasing decision.
Are the example prices current supplier quotes?
No. They are illustrative values chosen to demonstrate the calculation. Enter current confirmed offers for the same specification and quantity.