Sell your retail copy and buy the game on Steam? I haven't tried Moxxi yet, but the other two DLCs are awesome, and at this price Moxxi is worth it just for the stash.Damn, I wanted to buy the Borderlands DLC but I have a retail edition of Borderlands.
Don't really want buy it again just for steam. Probably a good thing, the reviews for the DLC's arnt anything spectacular.