Or how much would you pay for water? Airports have you right where they want you. You can beat the game by packing your own water bottle and a few protein bars when hunger and thirst arrive before your already delayed flight.
That is of course unless you enjoy spending $100 on Doritos and a Coke Zero. My suggestion is you bring your own empty Camelbak through TSA and then fill it with sink, fountain, or filtered water. Even when I’m on a client’s per diem, I will not submit to this price gouging. Remember, it’s not long until you get onboard your plane and get an ice-filled cup with a quarter can of soda.