what's the price of the book?
â¦but $3.99 sells the most copies. Smashwordsâ findings suggest that those $2.99 authors should price up by a dollar: âOne surprising finding is that, on average, $3.99 books sold more units than $2.99 books, and more units than any other price except FREE. I didnât expect this. Although the general pattern holds that lower priced books tend to sell more units than higher priced books, $3.99 was the rule-breaker. According to our Yield Graph, $3.99 earned authors total income that was 55% above the average compared to all price points.â.