A Chart that Shows a Dismal Trend in Sales of Print Science Fiction and Fantasy Books
scientific discipline fiction and illusion book sales , as measured by Nielsen Bookscan , have dropped dramatically in late years . Just in 2012 , science fiction script sales flatten 21 percent , and phantasy book sales dropped a startling 28 percent . In one twelvemonth . Before you panic too much , bear in judgement that Nielsen is only measuring print book gross sales in certain outlets — and e - book sale are probably picking up much of the slack here ....