They're pretty hard to come by. I don't know of any group that is particularly fond of them. I mean repairing them has to be simple. I just think by the time the 2600 came out, a lot of people did junk em. I know a guy that has one. I think he has all the games too. But he doesn't play it. Just sits on a shelf behind some glass. And he's unwilling to part with it.
I've got a Channel F in box but mostly for nostalgia purposes... First game console I ever played, my parents had one when I was very young. Fucking paddles on the thing are awful. Oh and check out the box art for the console... Its interesting.