Demeter, you need many more than five ratings for your book on Amazon. Toward that end, you may want to check out a new publication on Medium, Free Amazon Reviews for Your Featured Book at https://medium.com/free-amazon-book-reviews-for-your-featured-book. We are just beginning to list books to be reviewed by Medium readers. Books will be listed first-come-first-served, so you may want to include yours soon.