> labels including the "price per unit weight/volume" We overestimate the average person. Not everybody knows what that even means. They just don't have a conc

> labels including the "price per unit weight/volume" We overestimate the average person. Not everybody knows what that even means. They just don't have a concept of ratios that can be compared. > go for the cheaper product price. That might still be a valid option if the packaged quantities differ my a lot. E.g. if I only need 100g of ham for a sandwich, it's not better to buy a whole 1kg piece if that's just going to rot in my fridge.