Volume pricing
Also called: Volume discount pricing, Stair-step pricing
A usage pricing structure where the total quantity determines a single rate applied to every unit.
Charge = Total units × (rate for the tier the total falls into)
Volume pricing looks at the total quantity, finds the applicable rate, and applies that one rate to everything.
With rates of $1.00 up to 1,000 units, $0.80 to 5,000, and $0.60 above, a customer using 6,000 units pays 6,000 × $0.60 = $3,600. Under tiered pricing the same usage costs $4,800.
The cliff problem
Volume pricing creates discontinuities at the thresholds. At 5,000 units the customer pays $4,000; at 5,001 they pay $3,000.60. Buying more costs less in absolute terms.
Customers notice, and rationally game it — rounding orders up to cross a boundary. That is not necessarily bad (it increases committed volume) but it should be a deliberate choice rather than a surprise, and the cliffs need to be positioned where you are happy for demand to bunch.
When to prefer it
Volume pricing wins on comprehensibility. A single effective rate is easy to quote, easy for a customer’s procurement team to compare against alternatives, and easy to model in their own budget.
It is the common choice for seat-based and committed-volume contracts, where the quantity is negotiated up front and both sides want one number. Tiered is the more common choice for pure consumption pricing, where usage is variable and unpredictable and a customer crossing a cliff mid-month would produce an alarming invoice.
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