International Digital Publishing Forum reports that November e-book sales were $18.3 million, compared to sales for the prior November, $6.1 million. The leap is triple, and though we must not get jaded about these astonishing monthly postings, triple digit leaps have become routine with no end in sight.

IDPF reminds us that:

• This data represents United States revenues only
• This data represents only trade eBook sales via wholesale channels. Retail numbers may be as much as double the above figures due to industry wholesale discounts.
• This data represents only data submitted from approx. 12 to 15 trade publishers
• This data does not include library, educational or professional electronic sales
• The numbers reflect the wholesale revenues of publishers
• The definition used for reporting electronic book sales is “All books delivered electronically over the Internet OR to hand-held reading devices”

Richard Curtis