Are they auctioning them for a charity or something? Don’t know, BUT, Sam’s Club will be auctioning three Ghostbusters The Video Game posters, signed by Dan Aykroyd. The auctions will also include a copy of the game – one for the PS3, Xbox 360, and Wii. The auctions will go live on June 11th.

[UPDATE]

The auctions also include the exclusive gold proton pack, as well as the poster and copy of the game (for the PS3 and Xbox versions only.)

– PS3 Auction is live!
– Xbox 360 Auction is live!
– Wii Auction is live!