Far more than the print bestseller list, the top of the Kindle chart is consistently filled with low-priced titles. The three titles in Michael Wallace's Righteous series (priced at $2.99, $3.19, and $3.19) have all made it into the Kindle top 10. The three books, published by Thomas & Mercer, are ranked #5 (The Righteous), #6 (Mighty and Strong), and #8 (The Wicked).