We recently spun off our Amazon optimization work into its own company called The Book Rank, which focuses solely on Amazon keyword research and category selection. The streamlined process allows us to provide a lower price and a quicker turn around for authors. 

Amazon optimization is one of the most important steps in the life of an independently published book. Without it, the chance of a book breaking free from the pack and achieving a rank (which then provides an algorithmic boost) are virtually zero.