Newegg offers a $20 Microsoft Gift Card
with purchase of a select video game or console
. Assuming you'll use the gift card, that leaves many of these items at the lowest total prices we could find. Most bag free shipping
. (Otherwise, shipping adds $3.99.) Eligible items include Batman: Arkham Origins for Xbox 360, Injustice: Gods Among Us for Xbox 360, and the Xbox 360 4GB console.