I've seen the same and really thought about listing mine but decided not to. IMO, the game is not going to be remade, it's top 5 no question, loaded beyond belief, etc, etc. In a hobby where toppers sell for 2k, I can see why this is going for 20k.
plus the money would just go back into pinball and I would just miss the POTC.
and maybe 25k two years from now if it's never remade ; )