A Skyscanner for pre-owned watches.

WatchIndex aggregates listings from the world's largest pre-owned watch marketplaces — Chrono24, eBay, and WatchBox — into a single searchable database. Search a reference number, see every listing, sort by price, and click through to buy.

We never touch the transaction. Buyers click out to the original marketplace where the watch is for sale. Sellers get more eyeballs on their listings. Buyers get transparency.

How it works

• We pull public listing data via official APIs (eBay Browse) and licensed scraping providers (Apify) for marketplaces without one.
• Listings are normalized: price converted to USD, condition mapped to a standard scale, seller location parsed.
• Data refreshes continuously. When a watch sells, it disappears from the index.

This is currently a demo with seeded data. Live marketplace integration is the next step on the roadmap.