I have a DW-8000 that was stored in a attic (from the looks of it). Generally in good shape and sort of works - plays sounds but some of the voices are intermittent, but I'm willing to strip it down for parts, if anyone is interested.
Joystick is no good, keyboard appears fine. Everything is sold AS-IS, but I'm very careful when removing parts. I'm reasonable on price. I want to make a couple bucks after the effort of opening, removal, packing and shipping.