There are a couple up on that ridiculously big online auction site right now. One for $20 opening bid on a normal auction, and one that is simply for sale for $40.
If you, or someone you know is handy, 95% of this age of electronics can be brought back by cleaning the switches, and replacing the electrolytic capacitors, which dry out over time. Such a move brought back my Vivitar Process Time Commander, a unit similar to what you have,