8/16 bit game cartridges
Holy shit, I just tried the first thing I could think of (Kirby's Dreamland 3) and it's selling for $50 cartridge-only?! I don't think I would ever want to part with mine, but that's quite a bit for such a major series. Although I just tried several more and most are in the $5-10 range I was expecting. It's not really a fair comparison if you're looking at eBay prices vs what used media stores had lying around a decade ago, if that's what you're doing.