" @MrKlorox said:

Dr. Pepper isn't free. A 20 oz bottle costs around $2.00 (depending on where you get it) which is equivalent to 160 MSP. Smaller than that and there is no lid/code.  edit: I wonder if Americans could buy the pack directly by using the UK marketplace online. That's how I get XBLA games a few hours before they're put up on the US 360 marketplace. "

True... but, you're getting something awesome as well as a free DLC. You're basically rewarded for something being awesome. And over here, we can't get 160MSP codes, so you may as well buy the bundle pack. And not only that: I don't have any way to pay for MSP on my 360, so I will be forced into paying £20 for 2100 Microsoft Points. "

If you have a bunch a envelopes and stamps lying around, you can get these for free! It's limited to once-a-day and takes a couple weeks to receive the codes, though. 
  

FREE CODES: Mail in a self-addressed, stamped envelope (Vermont residents may omit return postage) to the Free Code Address. Requests must be received by the Free Code Request Deadline. Each mail-in request must be mailed separately. No mechanical reproductions permitted. Free Codes will be mailed to you in the self-addressed envelope you enclosed.  

Free Code Address
Dr Pepper EA "Every Bottle/Cup Wins" c/o YOU Technology Brand Services, Inc., 701 Gateway #101, South San Francisco, CA 94080    

              

Are we going to be able to just outright buy the DLC in the US? That would be exactly the same cost as buying 4 Dr. Peppers and is way more convenient.