SOLD -- thanks for all the interest!
I'll entertain offers, but I think $100 to a good home is a reasonable price, given how it's kitted out:
450mhz, 768MB RAM, 120GB HD, quiet cooling fan, 15" LCD studio display, mouse and keyboard. DVD ROM optical drive has difficulty ejecting disks -- I think every cube does. A little help with fingertips or tweezers is usually required.
Currently running OS 10.4.11.
Plastics show some scuffing here and there, but no cracks.
Pick up only; I don't want to ship this.