Maybe.
Obviously they are much more expensive than doing it yourself. I know some people use them but they are obviously well heeled and have money to burn. Its kind of like eating out 6 times a day.
If you are maybe a CEO with lots of dough but wanna looked ripped at the beach and have zero time and live a sad lonely life without a wimmn to cook for you, maybe.
If you are a normal shmo with an about average income, its not worth it. They don't contain anything more than what you can do yourself, unless they lace the salad dressing with dbol.