Won't Miss #45 - pitifiul economies of scale (reflection)

Now that I'm back in the U.S. with access to all of the types of sales that are common here, I conceptualize what it means to be able to buy a lot of something in order to get it cheaper. One of the common sales here is at Safeway supermarket at which I can buy cases of soda for about half the usual price during sales. They tend to do a "buy 2, get 2 (or 3)" free deal. Sure, we have stacks of