Editorial & Review Policy

Calculator logic

Core formulas are tested independently against known scenarios before release. Mathematical QA is kept separate from marketplace fee-data QA so a correct formula is not mistaken for a current fee schedule.

Marketplace fee reviews

Fee-sensitive claims should be checked against current official marketplace documentation. Because rates can vary by country, category, plan and seller program, calculators keep assumptions visible and editable rather than presenting one permanent global rate.

Educational content

Guides are written to explain ecommerce economics, not to manufacture page count. Articles should add definitions, worked reasoning, practical decision guidance or marketplace context that helps a seller understand the tools.

Corrections

If a fee assumption, formula explanation or page contains an error, the site should be corrected promptly and the relevant reviewed date updated where one is shown.

Commercial independence

Future advertising or affiliate relationships should not alter calculator outputs or the editorial explanation of marketplace economics. Any material affiliate relationship should be disclosed where applicable.