He's not finding that to be true is all I can say. Every weekend he sends me messages about what he found. Last weekend it was a boxed and working Vic 20 with software for 15 bucks.
He keeps a ton of stuff and sells the stuff he doesn't want. If he auctions it, I'll post the link. Think they go for around 100 bucks or so.
The other thing that he's killing on are 80's LED watches. There is a crazy market for these, I can't imagine why. He probably makes more on these than the games, since he'll often by 2 or 3 in a box for 50 cents and sell them for 40 or 50 bucks a piece.