This is probably old news to you since you've been playing, but in case you haven't gone into the RMAH as of late, you can now purchase gold.
Diablo 3 gold finally available on real-money - Video Game News, Videos and File Downloads for PC and Console Games at Shacknews.com
Diablo 3 gold finally available on real-money - Video Game News, Videos and File Downloads for PC and Console Games at Shacknews.com