Theres a black one on ebay right now with no bids at $80 + $12 shipping. Non-working, though. Probably only needs a gear replacement which is an easy fix.
One popped up about 2 hours ago for $99 BIN that WAS working... it was gone in a matter of minutes. Even had a manufature date of August '89, which was cool to see after reading the thread/discussion about the CD drive's '89 or '90 release date.
Still on the fence about the color, though...