While a good deal, it isn't what everyone is looking for when they come to a TG. All you can drink when there is like two choices of liquor can mute things a bit(this happens at tgs when you get sponsors) and if you are bringing friends it is a lot easier to throw 80 in the can than 400.
The food a the Georgia tailgate was insane and plentiful and certainly worth that price, but I'm unlikely to purchase that for any guests I bring on the spur of the moment when I'm not sure if they are the kind of folks that want to pig out before going to a 4 hour game.
...and when I bring my kids they aren't going to drink and are more than likely going to wait to get a cheese burger in the stadium because they have the palette of the pre-teens they are.
I guess all I'm saying is that when you hit that 100 price point your committing a good bit more and the decisions become "more considered" than when it's 20 bucks to ensure you have a place to grab a beer, watch the early games, and see what's on offer that might be good to eat.
I went straight to the site to buy and then when I saw 100 I heard the screeching sound in my head and decided I need to figure out who was going with me first....and now it is canceled likely because myself and a few others hesitated.