Feenomics
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For eBay, Etsy, Poshmark, Whatnot and every other marketplace seller

Know exactly what you’ll keep.

Fee, payout and shipping calculators that use the rates printed on each platform’s own fee page, checked on the date shown on every tool. No sign-up, no email gate, no “updated 2022” surprises.

Marketplace fees

What you net after every fee line, with your category, promoted-listing rate and costs.

All marketplace fees →

Shipping and packaging

Billable weight, USPS cubic tiers, boxes per pallet and the smallest box that fits.

All shipping and packaging →

Getting paid

Payment-processor fees and the amount to request to net a target.

All getting paid →

Every rate has a source and a date

Each calculator shows the official page it was read from and the day we last checked it. If a platform changes a fee, the change log records old value, new value and effective date.

Tested against the platforms’ own examples

Where a platform publishes worked examples of its fees, the calculator must reproduce them to the cent before a change ships. The test results are public on the methodology page.

Independent and ungated

Not owned by any marketplace, payment company or carrier. No sign-up, no email gate. Questions and corrections: contact.