As is always the case, the market will decide what it's worth - it's worth what anyone is willing to pay for it. In general, I think this is a $1,000 game. If you want more than that, be prepared to wait. If you need to sell it, be prepared to lower your price.

In general, it's tough to sell a game on a collector's forum after asking people for advice on how much a game is worth and then telling them you got it for free. For some reason, people like to think that what you paid for a game has an effect on what you can sell it for.

At any rate, selling a game is always about finding the right guy at the right time at the right price. Your game will sell but what you get for it will depend on how many factors (right guy, right time and right price) happen at the same time.