Posted November 12, 2015
high rated
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You would be presented with a warning message about this in Checkout, and the only way to actually make such a purchase would be to buy a gift code. That being said, this gift code would not be redeemable on an account that does not have the base game on it.
I apologize for the unclear error message in /redeem/, though.
I have also found the ticket which you created an hour ago, and have replied to it with some additional information.