They come up from time to time. There was one for sale on KLOV years ago and while it generated a lot of interest I don't think it sold for much more than $300-$400, if even that. Interesting piece, but replay value pretty limited.
I picked one up locally several years ago after a neighbor showed up at my door with it. I got it for $50 and flipped it here for $100 and they paid to ship it somewhere via DHL.