Prince Harry’s memoir Spare is ‘fastest-selling non-fiction book ever’ Posted on January 11, 2023 By Charlielikes Prince Harry’s autobiography is the fastest-selling non-fiction book ever, recording figures of 400,000 copies so far across hardback, ebook and audio formats on its first day of publication. news Tags:'is, book, ever’, fastest-selling, harry’s, memoir, news, non-fiction, prince, spare, topnews, trending