How to compute price per unit for shelf comparisons

1. Enter total price

   "Total price" is what you'd pay for the whole package — sticker price including any per-package fees but BEFORE bulk-checkout discounts.

2. Enter units

   "Units" defaults to 100 — handy because per-100g/per-100ml is the canonical EU shelf-tag unit. For US ounce/pound prices, change to the package's exact net quantity (e.g. 16 for a 16 oz can).

3. Press Run

   Result returns pricePerUnit = totalPrice / units, rounded to 4 decimals. Units of 0 throws "Units must be > 0." — division by zero isn't allowed.

4. Comparing across stores

   Always normalise to the SAME unit on both sides. A bigger package isn't automatically cheaper per unit; even "family size" sometimes loses to the medium. Let the number, not the marketing, decide.