If you're like me and have a stack of games to play you may not have gotten around to Batman: AC yet. Walmart has the GOTY for the same price found here with a bonus download of Gotham City Impostors (1200 MSP) for free (download code for XBLA). Not sure how long this will be available but you can check it out on their website to see if it's available near you.
Sorry for the lack of response, Thomas. It was the game of the year version. I have barely been able to stop playing this game since I bought it. It's probably the best deal I have gotten on a new game in ages.