As far as JAR concession costs, I just read an interesting article on the price of concessions at the Super Bowl that contained the following-
The stadium, opened in 2017 by Atlanta Falcons owner Arthur Blank, is known for its low prices on beer, hot dogs and refillable sodas, and those prices haven’t changed for the big game.
A regular soda, bottle of water, pretzel, popcorn and hot dog are all just $2, while nachos with cheese, waffle fries and slices of pizza go for $3. A large soda cup is $4, cheeseburgers are $5 and a chicken tender basket with fries will cost fans $6. Domestic bottled beer is going for $7 with drafts starting at $9.