Quantity tiers
Quantity tiers set a per-unit surcharge that changes with how many units the customer buys. It is available on choice and numeric options.
Use it for volume pricing on an add-on: personalisation that costs less per unit on a bulk order, because your setup cost is amortised.
How a tier is chosen
Section titled “How a tier is chosen”Each tier is a quantity threshold and an amount. For a given line quantity, the tier with the highest threshold at or below that quantity applies, and its amount is charged per unit.
| Tier | Per-unit surcharge |
|---|---|
| 1 or more | £5.00 |
| 10 or more | £3.50 |
| 50 or more | £2.00 |
| Line quantity | Tier used | Per unit | Line total added |
|---|---|---|---|
| 1 | 1+ | £5.00 | £5.00 |
| 9 | 1+ | £5.00 | £45.00 |
| 10 | 10+ | £3.50 | £35.00 |
| 60 | 50+ | £2.00 | £120.00 |
Note the step at 10: buying ten costs less in total than buying nine. That is inherent to threshold pricing, not a bug. If it matters to you, keep the steps small enough that the cliff is not worth gaming.
Quantities below every tier
Section titled “Quantities below every tier”If the line quantity is below your lowest threshold, no tier applies and nothing is added. A quantity with no tier is not an error, and the app will not invent a charge for it.
So if you want every order charged something, your lowest tier must start at 1. A tier list starting at 10 means quantities of 1–9 are free.
Building a tier list
Section titled “Building a tier list”- Start at
1unless you deliberately want low quantities free. - Keep thresholds in ascending order with descending amounts — that is what a customer expects from volume pricing.
- Duplicate thresholds are resolved deterministically, but they are a sign the list needs tidying.
Checking it
Section titled “Checking it”The price preview on the product page updates as the customer changes quantity, so the tier boundary is visible before the cart. Test at least one quantity on each side of every threshold before publishing.