I wouldn't buy that meal since i still be hungry, but it probably good to use these as free samples for costumers to try out before they buy the normal sized version of the meal. I think people who are on diets will love this.
I think if a company made like a whole package of the mini burgers and sold them as microwavable snacks in a pack of 50+ for about 5 bux. I can see someone buying them for a quick snack while watching a movie, or to serve to guest at a fancy dinner party.