One product, three very different prices
The same item rarely sells for the same price across marketplaces, because each takes a different cut. To clear £25 on Amazon you might list at one figure; on Etsy, with its stack of smaller fees, at another; on eBay, somewhere else again. Working those out one calculator at a time is slow — this does all three at once so you can see, at a glance, where the same take-home costs the buyer least (and where your margin is thinnest).
It's part of The Quiver — the complete Centaur toolbox. A Quiver membership lets you save each pricing to your account under a product name, reopen it whenever you revisit your prices, and export the lot to a spreadsheet — and it's included free with Centaur's Standard hosting plan and up.
For multi-channel sellers
Selling across platforms, made simpler
Pricing, fees and keeping your margin across marketplaces. No noise, unsubscribe in one click.
Common questions
What rates does it use?
Standard "most categories" rates for each marketplace as of 2026 — Amazon referral (with the UK Digital Services Fee), eBay business final value fee (with the per-order fee, UK regulatory fee and VAT on fees), and Etsy's listing + 6.5% transaction + processing + regulatory fee. Fine-tune the Amazon and eBay rates above for your category. For the full per-platform detail, use the individual reverse calculators.
Does it assume free postage?
Yes — for a clean comparison it prices the item with no separate postage. Use the individual eBay and Etsy calculators if you charge postage and want it folded into the fee base.
What's The Quiver?
The Quiver is the Centaur toolbox membership — it unlocks saving, history and CSV export across all these tools (and any we add), for £5/month, £40/year or £200 once for lifetime access. It's included free from Centaur's Standard hosting plan up (not Basic — Basic can add it for £20/year).