1. Enter product cost
Use the landed cost of one saleable unit.
2. Add fixed order costs
Include fulfillment, packaging, fixed payment charges, and any predictable shipping subsidy.
3. Enter percentage fees
Combine transaction or marketplace fees that are calculated as a share of selling price.
4. Choose a target margin
Use the desired profit as a percentage of selling price, not as a markup on cost.
5. Review the target and break-even prices
Round the target to a practical retail price and recalculate margin if needed.