> ... few people with a hundred outfits would go out and buy a hundred-and-first even if it was really cheap, because they already have all they want. Aren't y

> ... few people with a hundred outfits would go out and buy a hundred-and-first even if it was really cheap, because they already have all they want. Aren't you assuming rationality from economic actors? Some people really enjoy shopping. (Whether "some" is more than "few" I can't answer.)