Konrath's success suggests that self-publishing, for the most part, can make a writer more money than the traditional publishing option. Unlike traditional publishers, Amazon incurs virtually no cost in keeping your books “in print” or listed for sale on their servers. Nor is Amazon looking for the next James Patterson and therefore ignoring you and your books because they haven't instantly made millions. These two factors create a situation where any author able to tell an exciting story can make money.
One more fact suggests that sales of self-published books will increase: Amazon's Kindle is the biggest selling reader and by far the market leader, which means that more and more people will be reading on Kindles, increasing the potential audience.
And the best part of it is that writers are no longer at the mercy of editors and traditional publishers. Nor are they any longer at their whim — today it is the marketplace directly that decides the worth of a book.
What do you need to be successful as a self-published author? You need to be able to tell great stories. What makes a story great? To answer that question, you need to know your target audience because it is reader taste that today determines what makes a great story in the new publishing paradigm. How do you catch their attention? You need to offer some of your work free or nearly free. And you need to keep writing and publishing your work. Which means that you need to have patience, persevering in the face of adversity — Konrath's success comes after two decades of rejections.