True unit cost
Allocate every shipment-level charge before comparing supplier quotes or setting a retail price.
Each tool on Profit Per Order exposes its assumptions. The purpose of this hub is to connect those formulas instead of treating every metric in isolation.
These guides use explicit formulas, assumptions and worked examples. They are planning references, not market benchmarks.
Build a price ladder that protects maker contribution, retailer margin and order-tier discounts without relying on an arbitrary two-times markup.
Run one repeatable monthly check from source documents through order contribution, break-even acquisition, returns, fixed costs and a downside scenario.
See how a cents-per-order payment charge raises the effective fee rate on inexpensive products, then test price floors, bundles and minimums.
Build a planning estimate from supplier quote to warehouse receipt, then test freight, duty and quantity downside cases before placing the purchase order.
Solve the minimum order value needed to fund seller-paid shipping without confusing revenue lift with contribution lift.
Use the right profit layer for pricing, advertising and operating decisions—and avoid treating gross margin as money available for ads.