Here's a guy that wasn't even a writer - he used to be selling insurance policies! Now he has sold more than a million e-books in just five months.
By now you'd be forgiven for thinking "Well he found his element: His writing is so darn good he would have landed a publisher on first try anyhow". But you what? You would be wrong. On both counts. He says so himself and I agree having read one of his novels. His fiction isn't bad - far from it - but it is tuned to a rather specific group of readers and isn't likely to appeal to a general audience. That said, what you should pay attention to is that he sold so many insurance contracts he became a millionaire at age 28 and took to a second life as investor at age 35 - being worth $25 million. Anyone who can do that is worth listening to if you are looking for advice on selling stuff.
But it gets better: With no literary training, no creative writing classes and no degree in classic literature (but a secret love for westerns of all genres), he sat down and wrote. He also brought all his sales and marketing skills to bear: Creating a system or strategy if you like. No hidden ingredients, no "and here you gotta get lucky" or "With a masters degree in finance or viral marketing, this will be easy". None of that. Just simple "roll up your sleeves and do it" stuff. Written in plain English.
If you are an unpublished author, you cannot afford to hold onto the five bucks he charge for his book.