price card / pack 2 · free workflow
Work Out How Many Uses Justify the Big Pack — Free
Give the two unit prices and what the big pack costs you today, and the card tells you how many uses it takes before it was worth it — a number you can compare against how often you actually use the thing.
What this replaces
Unit-price comparisons ignore the money sitting in the cupboard. This divides the extra cost by the saving per use, so the answer is a number of uses you can compare against your actual habits rather than a ratio that assumes you will get through it.
Tool note. This runs entirely in your browser — no account, no upload, no paid API key. Google NotebookLM is named as the free source-grounded reading path for the material you paste; its published free-tier terms were checked on 2026-09-13 and can change.
The four passes
Collect the smallest useful input
The bulk unit price, the small unit price, and the extra you pay today.
Let the card divide them
The saving per use drives the uses-to-break-even figure.
Compare it against your real rate
Twenty uses means nothing if you use it twice a month.
Check storage and shelf life
A payback you reach after it expires is not a payback.
Try it on the price card / pack 2
The board below runs in your browser. It opens with a worked sample so the result is visible before you paste anything; switch scenarios, edit the text, or reset to the sample.
running the sample…
first-load · sample values are illustrative, not verified facts
Everything you paste stays in this browser tab. Nothing is uploaded, there is no account, and no request leaves the page to generate the result; clearing site data removes anything saved locally.
What breaks, and what to do
Prices without units
Three bare numbers are read in order; label them to be safe.
Bulk price higher per unit
The card reports never; there is no saving to recover.
Perishable goods
Nothing here knows the shelf life; compare the uses against it yourself.
Go deeper — Price Card
The free board above is the whole loop. The paid tier keeps the arranged output so you do not rebuild it.
- Printable card with a usage tick column to keep on the pack — estimate: 7 minutes saved per purchase decision, basis: 3 prices re-checked at ~2.3 minutes each
- Saved local history of purchases compared — estimate: 5 minutes saved per repeat shop, basis: re-entering 3 figures at ~100 seconds each
$4 one-time