So I pre-ordered Dead Rising 2 off of Amazon, and didn't really care about the DLC avatar outfits I was going to get. Obviously, these codes never came to me. As an apology, Amazon sent me this:  

Hello,

We’re writing again to let you know the pre-order codes for the Dead Rising 2 Avatar Outfits have been delayed indefinitely.

We’re very sorry about this.  To help make up for the disappointment, we want to offer a 50% off promotional certificate to use toward the purchase of the Xbox 360 version of Marvel vs Capcom 3 sold and shipped by Amazon.com.  Here’s your code:

Promotional Certificate Amount: 50% off Marvel vs Capcom 3 X360