Starting with the Diablo III beta test, a new feature called Battle.net Balance was made available to store virtual currency purchased with real money to buy game-related services (character transfers, digital products like companions, and items in Diablo III's real-money auction house). The feature was released in the US region on February 6th, 2012. No news yet on when it will be available in Europe.
The Battle.net Balance is accessed from Battle.net account management settings (upper right).
- Use of Battle.net Balance requires access to Account Management.