Dirk the Average posted:

That's horrifying. At least at grocery stores they do the money/unit food conversion for you, but I can't even conceive of people who don't do that calculation. It's the first thing that both my mother and my father independently taught me about shopping and looking for deals.

Granted, there are some times where it's beneficial to go with the "worse" deal, such as when you don't need the extra stuff, or the extra stuff will spoil, but that's on a case by case basis.