I also got mine at a Goodwill, It was mixed in with the DVD players. I did a double take when I saw it, because we never get stuff like that at mine. I guy was holding and looking at it, he put it down and I immediately snatched it. I think it was 35$, system only. I got a controller off line, and the RCA are standard, and the plug is hard wired.
It was a Goldstar, and I kind of want a Panasonic model, it looks nicer.