What part of LIMITED edition is being misunderstood here?
In all seriousness though Im actually thrilled to see them keeping this as the name would imply, "limited," instead of making the money hungry move and mass producing. That being said I already snagged mine on Amazon
EDIT:yes, I would check ebay and other sites where people may be offering their own, slightly marked up possibly but itl deffinately be there. I wouldnt be surprised if people put up the exclusive codes for sale on their own either. If neither of those options are appealing to you, I would buy the regular game on release and wait a few months, by then amazon or ebay will have found a few new ones probably marked down (like my Reach Legendary, down from $100 -> $50)