Pre-order Batman Arkham Asylum (PS3/Xbox 360) for $52.99 w/ free shipping at Amazon.

This is set to ship on June 9, 2009.  Amazon will not charge you until the item ships, and if you find a better deal, simply cancel your order.

Check it out:  Batman: Arkham Asylum

Product Description
In Batman: Arkham Asylum, the player assumes the role of Batman as he delivers The Joker to Arkham Asylum. There, the imprisoned super-villains have set a trap and an immersive combat gaming experience unfolds.