Rather not drive up to GameStop for both (gifting one) games.
Yes, you're able to pre-purchase the Heart of the Swarm using Battle.net Balance, but you'll need to make sure the copy of the game you are purchasing is in the same currency as your Battle.net Balance. In other words, if your Battle.net Balance is in USD, you'll need to purchase a copy of the game in USD; we are unable to convert your balance into a currency of a different type.
Threats of violence. We take these seriously and will alert the proper authorities.
Posts containing personal information about other players. This includes physical addresses, e-mail addresses, phone numbers, and inappropriate photos and/or videos.
Harassing or discriminatory language. This will not be tolerated.