A competitor analysis on Amazon is the process by which you study how a competitor has strategized so you can improve your own strategy. By looking at those competitors and their products, you can look at factors like keyword strategy, price, marketing strategy, inventory, and sales history. While it helps to be niche with books, it can help if you angle your own strategy to a similar title. That can help you work out the size of the market you are dealing in, an expected growth rate, and the needs of your potential customers.