You obviously are completely oblivious to the kind of food served in prison.
There was a Prison Warden for a youth jail in America that boosted he could feed each inmate for a day for less that the cost you place on a single meal.
I don't actually think the meal price would be $7 on average but I didn't want others saying the number was too low. If you did it for $7 a day for 50 years, its $127,750. For a nice in between $250000 spent on food for 50 years.
