That Gears of War 2 Flashback Map Pack is now available on Xbox LIVE Markeplace. Remember that? The five maps are 400 Microsoft Points (US$5/AU$6.60). Not a bad deal.
These maps were supposed to be available for free only to those who purchased the game at GameStop. Well, there they are, waiting for your LIVE patronage.
Gears of War 2 Flashback maps hit XBLM for $5 [Xbox 360 Fanboy]