Reading The Bookseller‘s weekly list of bestselling ebooks as provided by Bookstat and by actual publishers is always fraught with challenges. On the one hand we have publishers providing real numbers, but only of course for the books they sell. On the other hand we have Bookstat making educated guesses at sales across all ebooks. … Continue reading According to Hachette UK Data Guy’s Bookstat over-guessed a best-selling title’s sales by 2,000 and under-guessed another title by 2,500 sales