I'm looking for an iMac G4, 700 MHz or better (if they even made any slower than 700 MHz, I'm not sure they did). 15" screen okay. Of course, 17" is better. I've been poking around on eBay and there are a few that seem to be from reputable people. Just to make sure I'm exploring all avenues, are there some specific used Mac resellers that are worth pursuing? And of course, if anyone has an iMac G4 that they're looking to sell, I'd love to hear about it. Thanks.