No, you can’t yet make your fortune on the real-money auction house in Diablo III. And even when you can, you’ll need an extra layer of security to get your hard-earned(?) cash.
In addition to the RMAH not launching with full gold-trading functionality, you’ll also need an authenticator attached to your Battle.net account to buy and sell. The authenticator will only be required for players who wish to add money to their Battle.net accounts. You can still buy items — or pay for your World of Warcraft sub — without an authenticator.
Furthermore, you can be banned for making any changes to your client, which would be in conflict with the EULA.
These both seem like sensible additions, since allowing gamers to engage in commercial ventures in-game is like a big, flashing sign to hackers and cheaters.
The Diablo III real-money auction house is expected to go live sometime today.