If anyone is looking for a used G4 12" Powerbook, I've listed mine on eBay.
It is the G4 12" running at 867mhz, I've added memory - it has a total of 640MBs of ram and a 40GB Hard drive. Airport Card, Bluetooth, Superdrive.

Check out the eBay auction:
http://cgi.ebay.com/ws/eBayISAPI.dll...e=STRK:MESE:IT

If you have questions, e-mail me.