The cheap box is often the expensive one

Packs hold wildly different numbers of uses, so comparing the prices on the front of two of them compares two different amounts of product. The fix is one division: price ÷ uses. That figure is what you actually pay.

Free, no account, and nothing is saved or sent anywhere — the maths happens in your browser.

Option A

Optional.

$0.30per use

Option B

Optional.

$0.43per use

Bulk powder is 31% cheaper per use — $0.13 less every time.

Only a fair comparison if both sides count the same kind of use.

Optional — turns the per-use figure into a year.

Over a year at that rate: Bulk powder $62.40 against Pods $90.13 — a $27.73 difference.

These are example numbers — change any of them.

Bulk only wins if you finish it. A big box that goes hard and clumpy in a damp cupboard halfway through is not cheap — and a refill system front-loads its cost, so the first receipt always looks bad. The Green Diaries has both arguments in full.

Worked out which one you want? Ask the assistant to find it, or see how it held up for the people already using it.