A seller who works Reverb offers more than once usually ends up with a spreadsheet: a cell for the marketplace rate, one for payment processing, an eBay comparison built the same way from a second fee page, and a new tab whenever the situation changes shape — a Safe Shipping quote to weigh, a shop's consignment cut, a buyer asking for a partial refund instead of sending the item back. Each formula is ordinary arithmetic. Keeping seven of them in sync, across two marketplaces' own fee pages, as the situation changes under you, is the part that gets skipped when an offer needs an answer in the next five minutes.
A spreadsheet can reproduce every formula this calculator runs — offer versus list, Reverb versus eBay at the same price, Safe Shipping versus self-insuring a claim, a shop's cut versus their cash offer, a bump versus taking the offer as-is, and a partial refund versus a return. Building it means opening Reverb's fee schedule and eBay's separately, typing the right rate into the right cell, and adding a new section the next time the listing needs a decision the sheet does not already have — which used to mean opening two seller fee pages and a spreadsheet each time, per this tool's own README.
This calculator keeps all seven of those decisions on one screen already wired to the same marketplace and payment rates, so a lowball, a Safe Shipping quote, and a return request are the same worksheet instead of three. A shareable link carries the full scenario in the URL, and the where-to-sell handoff carries the item's price, shipping, and cost into a comparison against eBay, Etsy, Amazon, and an own store without retyping any of it.
| Question | Where to answer it |
|---|---|
| What does this offer leave me versus waiting for list? | This calculator's offer-vs-list panel — both prices, one screen. |
| Does the same item beat eBay at these prices? | This calculator's Reverb-vs-eBay comparison, not a second fee page. |
| My situation has a wrinkle this calculator doesn't model (a bundle sale, a trade-in credit). | A spreadsheet you build yourself — it can represent any rule you can describe. |
| I want to compare this item to eBay, Etsy, Amazon, or my own store too. | The where-to-sell calculator, carried over with this item's numbers already filled in. |
| Is my data uploaded anywhere? | No. Everything runs in your browser; your figures stay on this device. |
Yes. Every formula this calculator runs — offer versus list, Reverb versus eBay, Safe Shipping versus self-insuring, a shop cut versus a cash offer, a bump versus taking the offer, a partial refund versus a return — is ordinary arithmetic you can put in a spreadsheet. Getting there means opening Reverb's own fee schedule and eBay's separately, copying the right rate into the right cell, and rebuilding the sheet from scratch the next time a listing is a different shape (a case worth insuring, a consignment offer, a buyer asking for a partial refund instead of a return).
Keep all seven decisions on one screen without re-deriving the sheet each time. A lowball, a Safe Shipping quote, and a return request rarely arrive on the same listing, so a spreadsheet built for one of them usually does not already have a row for the next one. This calculator also carries the item to the where-to-sell comparison with a link instead of retyping the price, shipping, and cost, and produces a ready-to-paste counter-offer message, which a formula cell does not.
Yes, when your situation has a wrinkle this calculator does not model — a bundle of several items in one Reverb sale, a trade-in credited against the price, or a fee structure from a plan this tool's inputs cannot represent. A spreadsheet you build yourself can represent any rule you can describe. This calculator trades that flexibility for a form that already has the right fields for a single item moving through one of these seven decisions.
No. The calculator runs entirely in your browser. A shareable link carries your numbers in the URL itself rather than sending them to a server, and the optional usage counter records only which features were used and the day, never your prices or costs.
This page names no specific product — it compares against the generic method of tracking these decisions in a spreadsheet, not a competing calculator. Open the Reverb fee calculator, or see should I take this Reverb offer for a worked example.