Common questions
Before you use a result
Are these official marketplace calculators?
No. SellerTools Hub is independent. Verify current platform fees in the official documentation linked from each relevant guide.
Are the examples real store results?
No. Worked examples are constructed educational scenarios so the arithmetic can be reproduced and replaced with your own data.
Which metric should I use before scaling?
Start with contribution profit per order, then check whether advertising, inventory and cash timing support the next step.
Does a positive calculator result guarantee profit?
No. It is a planning estimate. Reconcile the result with settled orders, actual payout data, refunds and business overhead.