Real margin and fees on the watch listing page you're already on.
The math is free. The $13 buys the one thing a spreadsheet can't do: what comparable pieces actually sold for, with the sample size shown.
No subscription, no account. The free tier is a complete tool, permanently.
Open an eBay listing or a Chrono24 offer. Flip Ledger reads the price on screen, applies your own fee stack, and shows what the watch would actually leave you with, in the page, while you are deciding.
None of that is limited by time, count or an account. It is the whole margin tool, free.
The paid part is not a bigger version of the free tier. It is a different kind of information: what comparable pieces actually sold for. Every figure carries its sample size, its range and its date span, so you can see how thin or how solid it is.
The arithmetic behind the panel, written out with worked examples, so you can check it against your own invoices:
It does not buy, bid, list or sell anything for you. It does not touch your accounts, your cookies or your passwords. It reads the price on the listing page you are viewing.
Your watches, sales, rates and observations stay on your computer. The free tier makes no network call at all. When you use the comps view, the extension reads our comps file from our own host, and it checks your licence key with Gumroad. Those two requests are the only network calls in the product. The licence request sends your key and nothing else. No browsing history is collected, no account is needed, and nothing about you is sold. Full privacy policy.
The free extension is published by us, the developer, not by Google. The paid part is sold by us through Gumroad. Google is not the seller of anything here.
If it is not useful to you, reply within 14 days and we refund the purchase in full. No form to fill in.