Appeared on a shelf this week

How this page is built

A listing counts as new here when it was absent or unavailable on one completed poll and available on the next, and it is shown only while it is still in stock: a copy that appeared and has since sold is not counted. When a shop shows us a large batch of listings we have never seen before in one night, those listings are left out: they are new listings rather than copies coming back. A copy the shop had shown us before still counts that night. A shop’s very first poll is excluded outright: on that night every listing it has looks newly appeared, which would say a great deal about when we built its adapter and nothing about the shop. That exclusion is why this page is small: we have been polling most of these shops for days rather than months, 9 of them appear here at all, and the rest contributed nothing. Where a night is missing, anything that appeared and sold within the gap is invisible to us and simply never shows up, which is why this page states nights observed alongside the count.