If you're talking about very recently released stuff, yeah, most of it is printed in vast quantities and readily available at many places. It's a little mind boggling to think what a lot of recent Star Wars stuff goes for, although that's somewhat of an outlier with the extremely high demand.
Overall, it seems like eBay sellers are increasingly setting above market "buy it now" prices. Sellers often send offers to potential buyers. When people watch items, sellers can send an offer to them, they can even do it automatically - soon after someone watches something, they get an automatic offer from the seller. If a potential buyer sends a seller a message, the seller can respond with an offer. It's a smart way of raising market values, because of course many buyers will just click the "buy it now" button, at the higher than market value price, which raises the average sale price. It's clear, though, that even in auctions (legitimate ones where there's no shill bidding), the prices are increasing on a lot of stuff. With inflation, some of this stuff getting more popular, etc., it appears that this upward trend will continue.
