[quote name='NJMane']"CAG16" code only work on USED games that may or may not include case and manual. "SAVER" code good for orders that are $25 and up. So unless you have more to order and care to risk not getting a manual/case its a good deal.[/QUOTE]
Also, I think it's worth mentioning that if they don't send you a case/manual, you can return the game in store as long as it's within 7 days of receipt. At least, that's what I have heard to be true (never tried it myself).