This is my Apple Power PC G5 that I have had since it was new. A dual 1.8 GHz, with the Tiger OS 10.4.1. It has 4 GB RAM and two hard drives: one 76 GB and one 233 GB. Works great. I have a wired mouse to go with it and if you wish the keyboard, would be $35 extra as I would need to replace it for my other Mac.
Price is $275 complete with the SONY monitor. If you wish the keyboard it will be the additional $35 as I will need to replace it. Or if you have the keyboard then just the $275. The wired mouse is yours if you wish it. NOTE: The machine is heavy - so will need to go on a strong table or shelf.