i have one of these i bought cheap off a friend ($100) working but semi-beat. they just aren't popular since if you're going to bother having a Gauntlet you ought to have the 4 player version which is where it sorta gets fun. 2 players is mostly "eh." right now it's at my wife's work in the breakroom where the employees get to play it for free and i get free storage, totally win-win, since i can't find a local buyer who'll give me my $100 back.
having played the 2 player and 4 player versions recently i opted to buy a Gauntlet: Dark Legacy as my keeper. the original was cool at the time but doesn't hold up as all that interesting.