Found this while looking for tickets. A's are offering an all-you-can-eat seat! For only $35, you can eat as many hot dogs, nachos, peanuts, popcorn, Pepsi soda products and ice cream as you want!
I hope to make it to Oakland this summer to check this out...
I think I have seen other teams doing that also, like maybe the Marlins (during Friday night home games only) and the Dodgers, I think. Interesting idea. Since its sponsored by AM/PM, that would make me think long and hard on doing it. :)
In Cincinnati they're offering $30 all you can eat tickets - hotdogs, popcorn, peanuts and Pepsi products. Not a bad idea, not a whole lot of variety on the menu but worth the price.