Inside Gillette Stadium you would pay 7 dollars for a beer or maybe 8 but lets face it, in Dublin in town (not temple bar) you wouldn’t blink at paying 6 euro for a beer which ultimately is the same cost.
Also, the tailgate is pretty serious over there. They get absoloutely BOMBED before the game and go in and sober up and then leave, eat some BBQ and then drive home. Ive been at a Pats game where there are people asleep in the stands! Overall it’s a class experience that the games in London don’t even come close to touching.