According to the London Evening Standard, the publisher of the popular book and movie The Girl with the Dragon Tattoo had 25% of their ebook sales attributed to that one particular work. Quercus is the publisher of The Girl with the Dragon Tattoo, and their chief executive officer Mark Smith said that he believes all of their e-book sales will make up between 17 and 20% of gross book sales in the calendar year 2012.
“People are buying more because it’s so convenient,” said Smith.
With that said, Smith also explained that the ebook sales do tend to be seasonal, with a majority of sales coming around Christmas time and the subsequent three months.