Julia: About a year zenegra 100 price In more recent times, of the 200,000 books that had recorded sales in 2008, only 10,000 sold more than 3,500 copies. Of the 1.2 million different titles sold in the US in 2004, only two per cent sold more than 5,000 copies. In 2007, the Authors’ Licensing and Collecting Society (ALCS) revealed that the average UK author earned £16,000, 33 per cent below the national average wage. Strip out the top 10 per cent of authors, and a writer’s average annual income falls to £4,000.