My name is NorrYtt on MtGO, and I've spent $23.74 on it (two draft sets of OD,TOR,JU). I squeezed out about 5 drafts before bottoming out, then I got a free draft from Chuck's Virtual Party (Sliver Queen).
If you can learn the system, you can do great, like going infinite from drafts. Drafts are heavily skewed by the market though (like how New Frontiers was a 16 ticket rare, which pays for your draft and then some, but you'd just have to know that and never pass it).
It's very interesting. I was drafting to make money, which means drafting to win, but snagging $ cards also.
At some point my momentum faded and I lost many drafts in a row. So I traded off most of my $ cards for a Domain engine and some Questing Phelddagrifs (got 'em 2 for a tick or something insane, the guy really wanted U/G Madness cards).
The deck is really fun because it's my style and I get to abuse Holistic Wisdom. Most people don't have a clue what it does until it's locked the game up.