Benchcraft / Field notebooksMethod & source ↓

Notebook 04   /   Supply & purchasing

Quote validity buffer

Check whether approval and purchase lead times fit the remaining supplier-price hold.

Prepared for Project buyer

01 / Working inputs

Set the scope

The example is ready to edit. Use the same job and period for every figure.

02 / Live working sheet

Result

Hold margin
3 days
Planned order lead time
15 days
Latest technical-review start
6 days

Owner’s next step Record the expiry date and ask the supplier to reconfirm if the margin is negative.

Calculations and exports run on this device.

03 / Calculation notes

How to read it

Steps run consecutively on the same calendar. A negative hold margin means the quote may expire before order.

Worked example
Hold margin · 3 days

04 / Original adaptation

Where it came from

A person reviews the output and handles exceptions before buying. Independent application for project buyer teams. The figures are editable examples created for this worksheet.

Greg Isenberg · 13 Businesses for the Age of AI ↗

JB Codex / Optional paid help

One workflow, reviewed by its owner

Map one repetitive job, agree its inputs and approval point, run an example and hand over a tested template. External systems are scoped separately. Your enquiry goes to JB Codex for review.

€149 one-time pilot after scope agreement

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