If you haven't been keeping up with the whole gaming world (mainly Dead Rising), then lets fill you in. Capcom announced a DLC prequel to Dead Rising 2. This DLC, called Dead Rising Case Zero, would have some content that would transfer over to your Dead Rising 2 game (experience, costumes), and would give you a little backstory.
Dead Rising Case Zero has had some details dropped recently by Capcom including a price and release date. Case Zero will be dropping exclusivley for the Xbox 360 on August 31, and will be taking only 400 Microsoft Points out of your pocket. Capcom's executive producer on Case Zero, Keiji Inafune, said that this DLC should cost gamers twice what they are charging. He went on to say that they wanted to make it accesible to as many players as possible, so charging a low price hopefully will do that.