Dixit is a party game that comes with 84 big, really cool cards with paintings on them. You can get it on Amazon for like 25 bucks with free shipping.
So here's the thing. If you preordered the expansion, Dixit 2, the company gave you a promo card for free. 1 card. It doesn't change anything about how the game plays, it's just one extra card that you can describe. But you can't get it anymore. So let's say it's 2011 and you ordered Dixit 1 and Dixit 2 on Amazon. You've got a total of 168 cards but you don't have this one card. EBay does though.
How much do you think people would pay for one card?
I've seen a bunch of these auctions and they always go for this much. I mean, come on, you could buy a brand new game for this much.
Edit: The Dunwich Horror expansion for Arkham Horror (great game) is currently out of print and will be reprinted. But in the meantime, if you want a copy it'll be like $125.00 to get your copy (normally, like $30-$35).