YES!!! buy it. thats a good deal. if it comes with keyboard/mouse/monitor you should not pass this up. you can actually run osx on this machine straight out of the box (it will be kind of slow, but fun to see osx in action, it's very pretty
). you should definately buy it, os9.2.2 will be as quick as greased lightning on that thing, but if you want, you can buy a 500mhz g4 upgrade from
http://www.sonnettech.com for $400 (kind of pricey, but nice if you have the dough) and osx should run pretty smoothly. you can get a radeon 7000 pci for $120 if you want to play better games, but the pci card will not support quartz extreme in osx.
in conclusion... go for it, those are sweet machines and that's a steal of a price. os 9.2.2 will be very quick and osx will be fast enough for light use. make sure that you put at least 256 megs of ram in the machine if you can. and if they have any extras, send me one