A gag in season 4 of Breaking Bad revolves around a pizza shop that doesn't but their pizza, and "passes the savings on to you."
This sounds stupid at first, but if you do the proposed math, the long term savings are significant.
Take a busy, mid city pizza shop that could sell as many as 10,000,000 pizzas in a good year.
Now, let's assume it takes about 10 seconds to but a large pizza.
Immediately we come to 100,000,000 seconds out of a year.
Divide this into minutes, then hours: 100000000/60/60=27777.
Now we'll assume the average east food worker earns about $20 an hour: 27777*20=$555555 saved per year just to not cut pizza.