Is Hiring Someone to Take Your Online Class Worth It?

There are a lot of advertisements that I have been seeing that promise you things such as Take My Online Class and that everything will be done on your behalf; assignments, tests, even discussions. It is an appeal to the ears, particularly those who are in work and study. Is it really worth the money or the risk, though? Has anyone ever hired any person to take their online class, and what was their experience like?