I have a thing for the old G4 iMacs and have always kind of wanted one. I was thinking of trying to find a cheap used one and play around with it, have it in my office, etc. But really, how much should I spend? Craigslist pricing varies for $60 to $400! I know if I want any practical use, the USB 2.0 models would be nice but most I see are 800mhz and lower, and even those vary in price a lot. My old university was giving them away a while back I heard since they finally upgraded to intel ones. So sad I missed out.