I went to the all star throwback game last summer with free tix, it is expensive to drink out there. The best deal we found were big Corona bottles for like 5 or 6 bucks. not a bad seat in the house though, the only thing that redeemed the experience was that we also got free tix to the VIP(free food, crab legs, oysters, and ribs, and free top shelf booze) tent after the game, totally felt like wedding crashers there, got a great pic with buck o'neil who was cool as crap. George Brett was a giant douchebag of massive preportions.
Overall, I had always heard how cheap the tbones games were when they first came out but the prices for things have jumped up to match all the other crap out there.