This is one of the bottom end (play wise) for system 1 games. But any system 1 in pristine condition is nice to have. I'd figure as a collector $1,500 base price if it still had the original board set and fully functioning. With the replacement CPU (hopefully Pascal's) then it depends - to a collector maybe less, to someone who wants a reliable playing game and enjoys the particular theme/art, may a couple hundred more.