“Amazon’s share of all unit book sales rose to 27% at the end of September 2012 from 21% during the previous year, while the share of e-bookstores and digital audio sites jumped from 1% to 6%.”
“Amazon’s share of all unit book sales rose to 27% at the end of September 2012 from 21% during the previous year, while the share of e-bookstores and digital audio sites jumped from 1% to 6%.”