I've been doing some research on eBay, and I just can't understand some people:
1) PSO (GameCube) is selling for $30. The servers have been shutoff for years. At least PSO Ep I & II Plus has the online quests on the disc and available offline, which might explain the $90 price tag. Also allows for downloading NiGHTS to your GBA, which is still super sweet.
2) The Ocarina of Time soundtrack is worth more than the game
3) Panzer Dragoon is worth more than Panzer Dragoon Orta, which features the original as an unlockable. Also can be played on your 360, which is likely hooked up yo your TV.
4) Rez and Ikaruga both are worth more on PS2/DC/GC than their much-improved XBLA version.
I could go on and on with re-released games, like Sonic CD...
I might also see if Pink Gorilla buys games. They're always at PAX selling rare titles, and have a store in Seattle. If they sell used games, they have to buy them, right?
I have a couple things from that case...