I already have a Battle.net account with European SCII on it. I want to pre-purchase Diablo III—it's €59,99 in our region, but $59.99 in the US region (cheaper). You can play in any region no matter where you bought the game, so I want to buy the US version.
When I try to get into the US Battle.net store, it tells me that I can only buy from my default region.
Is there a way to change my default region? (I have a close friend in New Zealand that can buy it from NZ, which should be in the American region.)