If I had the money I'd buy the darn thing just to dump roms anonymously in some place.
I'm not in the "I HAVE something that you DON'T HAVE philosophy". If I like it enough, I keep it, that's the value. I mean, if the game came with a limited gold pin that looks good, than yes that's collector value. That doesn't have anything to do with the game. This is the information age, everything leaks out eventually. You want value? Stick to gold pins.
If I want a rare game, I can create one for myself. It's easier to do everyday.
There is no point really unless you're really bad at it.