" Game Downloads are only available to US customers We apologize for any inconvenience this may cause you. Please continue shopping on the Amazon.com home page."
I threw in a US address and it let me order them all. They now appear in my Amazon games list and I can get a product key for them and/or download directly from Amazon.
EDIT: I'm going to add the games to steam with their product codes and see how it goes.
EDIT2: Strikethrough text for edited content doesn't seem to work... weird
It seems to be off and on; a friend tried to buy it at 10:24 and it was "currently unavailable" but was back by 10:31. Presumably it'll return again soon :)
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