Amazon has preorders of Bungie’s Halo 3: ODST for Xbox 360 for $59.99 with Free Shipping. Included with every preorder is FREE $10 Amazon credit towards a future purchase of a video game on Amazon.com. Plus, use coupon code: HALOODST and score an additional $5 Amazon credit towards Amazon MP3 music downloads when your game ships (more details). This title is expected to be released on or around September 22. The preorder also includes a bonus unlock code to play as Sgt. Johnson via Xbox Live.