How it works

An engine on our own servers checks official store APIs and feeds on a schedule. Popular and fast-changing items are checked more often; stable ones less often. Each reading is written to an append-only archive and kept.

This site is built from that archive. A chart, the lowest, average, highest and current prices, and the number of readings all come from observations we actually made.

When we have only a few readings, we say so. A two-day chart is not a typical price.

Stores without an official feed or approved affiliate API stay listed as pending access. We do not log in, we do not solve captchas, and we do not walk around bot protection.

Paste a store link into search if you want us to start tracking an item. If the store is one we can already read, it joins the next pass. If the store is still pending access, we queue the request until that access exists.