Cost me $270 USD. I think it was an awesome deal. I got the guy to knock off $30. Btw, there are NO scratches on it ANYWHERE. It came out of my local college according to the guy that bought it. These are the specs:

Dual 1.8Ghz G5 CPU w/ 512KB L2 Each CPU

1GB (4x 256MB) RAM. Space for 4 more. (I think)

900Mhz FSB

DVD-RW

152GB SATA HDD

GeForce 5700GX 64MB w/ DVI

I currently have it installing OS X 10.5 and set it up with an aluminum keyboard, and hooked up to a DVI 22" Samsung LCD.

It rocks!

EDIT: Pics!