Store Fee Lab is a free browser calculator for monthly Payhip costs in USD. Compare platform plans, optionally enter your own processor assumptions, and export a local CSV. Inputs stay in browser memory; anonymous aggregate usage counts are collected. Optional Payhip and Carrd referrals are disclosed and may compensate the operator; official references remain ordinary. Figures are planning scenarios, not profit or invoices. Built with AI assistance; no runtime AI.
Try four fictional Carrd briefs: a simple portfolio, a domain with a contact form, eight site slots, or owner sharing. Adjust the inputs and check a listed plan. Separate first-year cash costs from build-time value; export the budget as CSV. Free planning, no signup. Calculations run in browser memory; anonymous aggregate counts are separate. Optional Carrd referral links and a code are disclosed.
