Ama­zon is offer­ing a half decent pre-order offer right now. Pre-order select titles and receive a gam­ing credit to your account within 2 busi­ness days after your game ships in the amount of $10!  Choose from titles such as Van­guish, Assas­ins Creed and NBA.  Click here to check out this offer.  I’m not sure how long this offer is valid for but it does state lim­ited time only. I can’t sug­gest which titles to pre order though because I’m not much of a gamer.