Most commercials are predatory, meaning they are a bad value or take advantage of a group of people. Ie. Payday lending, pharmaceuticals, diets. Anything in that class should be avoided. Next is the selling to the wealthy. It may or may not be a good value, but it is only the wealthy that will buy it. Is. Cars, cruises, investment. If you have the money, go for it. Last is public announcements. These may or may not be worthwhile. So generally, if something is advertised, I don’t buy it. But I do sing the jingles. 8-)