I'm guessing 40 dollars. I think they would be foolish (although when has that stopped them) to release it at full-retail prices. At least with $40 they could say, 'Well at least it isn't $60'. We'll see though.
@azrailx: Man, I should go back and play that game again. You are absolutely right, rolling over fools with my magic. I think I spec'd warrior mage or whatever when you hit 10 or something like that. I remember it being even more powerful.