Mike, like Tom said, Secondary market is your best bet.
When the time comes, that's where I'll be getting my tix.
Just be prepared for sticker shock!
I'm willing to bet tickets will start in the $350 - $400 range, just to walk in the door.
If my memories of 08 are correct, the Home run Derby was cheaper, but not by much.
I remember thinking it made more sense to pay the extra dough, and go to the actual game.
If you think those prices are high, just wait until the Superbowl gets to NY!