Tier / Tiered pricing

Tiered pricing is a structure where the per-unit rate changes at defined volume thresholds — for example, a lower rate kicking in once a customer crosses a certain number of units in a billing period, rather than a single flat rate applied to every unit regardless of volume.

It matters because it rewards growth without requiring a customer to negotiate a new contract every time their usage increases: the pricing itself adapts as volume rises, giving larger customers a naturally better effective rate while keeping the model simple and self-explanatory for smaller ones.

In practice, tiers can be structured as either 'graduated' (each tier's rate only applies to the units within that tier, like an income tax bracket) or 'volume' (the entire quantity is priced at whichever tier the total volume lands in) — the two produce meaningfully different bills at the same usage level, so which one a product uses needs to be clearly stated, not left implicit.

The common pitfall is picking tier boundaries based on round numbers that feel intuitive rather than on where actual usage clusters — a boundary placed where few customers ever land does nothing for pricing psychology or revenue, while a boundary placed right where typical usage falls can meaningfully shape both perceived fairness and where customers choose to manage their consumption.