I fully understand using them. I just think its BS. Not quite along the lines of buying term papers, but not far off. And because a career can easily span 30 years, these companies can charge whatever they want and guys will still line up.
When I interviewed the PR lady inquired three times what I did to prep. I have her the exact same laundry list after the first two. She then asked again. I thought that she was either hard of hearing, or that I was. This was one minute into the interview and she already had me on the ropes. In mild exasperation I said, "Oh do you mean did I go see Cheryl Cage?" Both she and the Captain smiled, though his smile was large and genuine.
I said no and told her why.