Since launching of Amazon Kindle Direct Publishing (KDP) platform, has created an incredible tool to control their authors book publishing process. There is no longer a need for the endless publishers of books in the hope that someone might read it as it is and find a place for it in their catalog, however, define a new self-publishing is not without its problems.
Self-publishing means you (as an author), which is responsible for everything. When you get your book ready to be published, you are responsible for contributing to it. The marking process does not come naturally to many authors.
How Does Amazon Kindle Make Money
Amazon is losing money on each Kindle but makes money by selling digital content ecosystem for the long-term goal is to build up profits. (Source)
Amazon started losing money selling e-book sales of “wholesale model” Buying books in regular print publishers the wholesale price and then selling them off to set the reader’s expectations of low-cost e-books.
Publishers freaked out about this, however, because they thought it would cannibalize sales of print books. (Which is inevitable, but that’s another issue).
So, Amazon, probably will not make much money from that sale right now. But it’s also likely not lose as much money as it was. One day Amazon make more money on new books, because it is becoming a publishing house.