MPC500 in good working condition. 128mb of memory installed. Pads and buttons all work as intended, battery compartment is clear of corrosion. Comes with power adapter, original 128mb CF card (no original sample set anymore unfortunately) and a 2GB SD card with CF adapter for ease of use with modern computers and card readers.
The only flaw is the foam in the battery compartment had disintegrated before I got it. I just put a strip of denim over the batteries to hold them in place and it works perfectly.