About
About SellerFormulas
SellerFormulas is a focused resource for ecommerce sellers who need practical fee, pricing, profit, and advertising calculators.
Purpose
The site is for marketplace sellers who want clearer estimates before listing products, changing prices, or investing in ads. Many current calculator rates are scoped to United States seller assumptions where the page and source notice say so.
Scope
SellerFormulas focuses on Etsy, Amazon, eBay, TikTok Shop, and ecommerce advertising economics. It is intentionally not a generic calculator directory.
Accuracy approach
Marketplace formulas are implemented in reusable engines with source records and last-verified dates where applicable. The outputs remain estimates because marketplace accounts, item details, seller settings, and fee schedules can differ from public examples.