I’m a small single mom with the type of teen boy who has two breakfasts, a snack, lunch, an afternoon snack, and then three to five helpings of dinner. I expect some radical adjustments to my grocery shopping, plus also trying to figure out how to go from cooking for 4-6 people a night, to just…one. 
But you’re right - the board charge is more than I spend on groceries so…different buckets I guess.