Microsoft Store offers preorders of Halo 4 for Xbox 360 bundled with a $25 Microsoft Credit, and a customizable “Pulse” armor skin for $59.99 with free shipping. (These items will be added to your cart automatically.) Assuming you'll use the credit, that's tied with our mention from two weeks ago and the lowest total price we could find now by $14. Sales tax is added where applicable. This game is due for release on November 6.
You will receive coupon codes for the two extras within 10 days of the game's release.