Here is a summary of my relative book versus eBook sales from Amazon's affiliate program for 2009 through 2013.  The graph does not reveal revenue generated or units sold, but it does show the mix of book, ebooks and other everything else sold, via the Amazon affiliate program, over the last 5 years.   Interpret the graph this way, if I sold 100 products in 2009, 81 of them would have been books, one would have been an eBook and 18 would have been anything from a curling iron to a fl