Why Pay More

Changelog

• 2026-10-11First browser demo

What it is

A margin calculator and watchlist for reselling Amazon refurbished and used items.

The problem

Amazon refurbished and used offers are sometimes cheaper than Portuguese second-hand prices, but finding these gaps by hand is slow.

How it works

1. 1Enter buy price, shipping, fees, VAT and a reference resale price
2. 2It computes total cost, net margin and break-even resale
3. 3Save items to a watchlist with a target buy price and margin threshold
4. 4Everything runs in your browser — no server, no accounts

Stack

Status + What's next

Live

Fetch live Amazon refurbished/used prices and rank opportunities automatically.