SellerPlanKit methodology

SellerPlanKit is a planning and education product. It does not predict guaranteed sales, income, rank, or product success.

Calculation boundary

Calculator formulas use values entered by the user plus a limited set of sourced fee records. Product-specific fulfillment, storage, inbound, advertising, return, supplier, and compliance costs remain manual unless explicitly shown as sourced.

Unknown is not zero

A missing cost is treated as missing information whenever possible. It should not silently become a verified zero.

Recommendation boundary

Action plans diagnose the weakest assumptions first. Course and software suggestions are secondary and cannot improve a readiness score.

Affiliate independence

Commission does not participate in calculation results or recommendation ranking. Unapproved programs use official research links rather than affiliate links.

Freshness

Fee, course, and software records carry a checked date, verification status, and optional review deadline. Expired records should be reviewed before publication.

Privacy

Product projects are stored in the browser by default. Analytics events avoid storing the user’s detailed financial inputs.