I didn’t have to calculate the cost per meal at daughter’s school - they listed the price and it was $13 for a dinner (less for breakfast and lunch). Swipe your card and it took that much off it. They did have an unlimited plan (same price) and you could go into the dining hall to just get a drink or ice cream all day long, but if you were on the ‘swipe’ plan, that ice cream could cost you $10 if during the lunch time hours.