Everyone saw this one coming. Blizzard Entertainment has partnered with PayPal to handle Battle.net and Diablo III Real Money (Currency) Auction House transactions.
In order to create a PayPal account, users have to link their bank account or credit card. You don't need a credit card in order to open a PayPal account. It makes it easier for many people without a credit card -- and facilitates international players to pay and be paid through PayPal.
Another benefit of PayPal is all purchases and transactions are secure and protected against fraud. It's a great choice.
We're pleased to announce that in most regions, PayPal will be our payment-service partner for the Diablo III auction house, allowing players who trade with real-world currency the ability to cash out the spoils of their battle-torn adventures via a PayPal account.
PayPal will also soon be added in several regions as a payment option on Battle.net, providing another convenient and secure payment method for digital purchases of Blizzard products and services.
We’ll share region-related specifics, as well as further details on everything mentioned above, in the near future. Stay tuned! -- source