May 24, 2009 - I remember reading or hearing something a few years ago that said only 10 percent of all books published ever sell 1,000 copies or more. I cannot seem to find exact numbers anywhere, however, I found a boatload of other statistics on the
Para Publishing website. The self-publishing numbers are pretty low ... only 3.4 percent of Xlibris copies have sold more than 500 copies, for example.