I am sure there will be people that make money on the advice that's given. And I am sure most of the advice is valid. The question is: is it really worth $1000? Maybe you could have saved that $1000 and done these optimizations yourself (they seem pretty straightforward and you can find thousands of articles about retainer fees and fixed bids if you just search Google). I.e. maybe he is not selling anything extraordinary or "secret", it's just common sense packaged at a ridiculous price?
Here's some simple math for you. It would have taken my business partner (he took the course, not me) more than 10 hours to find all of the advice Brennan shared. He can bill out 10 hours to a client for $1000. Therefore is it worth it to pay someone to gather all this advice and package it in a way that allows him to apply it? Absolutely.
It took me a long time to realize many businesses are looking to exchange money for time. They have more money than they do time. It's a hard notion to understand when you don't have more money than time. I suspect you can't truly know it until you reach the point of being able to make that decision yourself.
If people think they will get $1000 of value out of it then they will buy it. If you don't think you can get that value then there is no reason you should buy.
