The following training procurement example is fictional. Amounts are in Japanese yen, excluding tax, solely to demonstrate a calculation. They are not market prices, supplier recommendations or measured AI results.
The decision is a 30-person course, not a headline price
The organization needs training for 30 people, completed by 20 October, within JPY 450,000. Thirty days of questions and answers after the course is mandatory.
| Quote | Information supplied |
|---|---|
| A | JPY 180,000 per session; capacity 10. Three identical sessions serve 30 people. All three can finish before the deadline. Thirty-day questions and answers are included. No additional fees. |
| B | JPY 420,000 for all 30 people. Delivery before the deadline and thirty-day questions and answers are confirmed. No additional fees. |
| C | JPY 9,000 per person plus JPY 60,000 setup. Supports 30 participants. Delivery dates and the duration of questions and answers are not stated. No other fees are listed. |
A is not a JPY 180,000 solution for this group. Equally, C's missing support information does not establish that C offers no support.
Keep mandatory requirements out of a weighted average
A low price cannot compensate for a mandatory condition that is not met. Separate requirements from preferences before requesting a recommendation.
Compare these three training quotes for an internal selection meeting.
Requirements: 30 participants; total no more than JPY 450,000 excluding tax; completion by 20 October; 30 days of questions and answers after training.
Use only the supplied quote information.
1. Calculate the total for 30 people and show each formula.
2. For each mandatory requirement, mark met, not met, or unconfirmed.
3. Do not treat missing information as “not offered” or zero points.
4. Separate candidates that can currently be assessed from those requiring clarification.
5. Draft the questions needed before a decision.
Do not select a supplier solely because its stated price is lowest.
[Paste the quotes.]
The completed comparison
| Check | A | B | C |
|---|---|---|---|
| Calculation | 180,000 × 3 | 420,000 total | 9,000 × 30 + 60,000 |
| Total, JPY excluding tax | 540,000 | 420,000 | 330,000 |
| Within 450,000 | Not met | Met | Met |
| Complete by 20 October | Met | Met | Unconfirmed |
| Thirty-day questions and answers | Met | Met | Unconfirmed |
| Current decision status | Outside this budget | All requirements confirmed | Clarify date and support before deciding |
B is the only option whose mandatory conditions are all confirmed. That does not prove B is the best supplier in every respect, or that C is unsuitable. It tells the decision-maker what the evidence currently permits.
Check the multiplication yourself or in a spreadsheet. In a real comparison, attach the quotation name, date and section to every material row. A neat table is not a substitute for that traceability.
Turn missing cells into a useful supplier email
We are considering training for 30 participants. Can it be completed by 20 October? Can participants ask questions for 30 days after the course? If both are possible, please confirm whether they are included in the quoted JPY 330,000 total.
This asks about the two conditions blocking the decision. “Please send more information” may simply produce another brochure. If the reply introduces an additional fee, update the calculation as well as the support cell.
Reconsider preferences without moving the goalposts
Keep participant count, completion date and thirty-day question support mandatory.
If C confirms these conditions, compare the eligible options with total price as the first preference.
Do not treat current unknowns as confirmed facts.
State which new information changed the conclusion.
If the budget itself changes, record that separately. Otherwise a later “better recommendation” might merely be answering a different question. This approach works for subscriptions, equipment or services too, provided you normalize the actual billing unit and do not invent missing prices.
Use Prompt Ready to prepare changing comparison conditions
The reusable part is not a verdict about A, B or C. It is the structure: participants, deadline, mandatory conditions, pricing unit and how to handle missing facts. Put those conditions into Prompt Ready, review the prepared request, then use it in your selected AI. Keep the supplier evidence with the final table; the application does not approve a purchase or verify a quote on your behalf.