The 14 publishers who report to the Association of American Publishers’ sales report said that ebook sales rose 127.9%. According to Publishers Weekly:
The gain was below the year-to-date average which has e-book sales ahead 165.6% through November, but was better than the 112.4% increase reported in October when e-book sales were $40.7 million. The $165.6% increase in the first 11 months of 2010 put e-book sales from the 14 companies at $391.9 million.
Of course these numbers, as usual are low. The big test will come, I think, in February, as the new ereaders wear off on their owners and a more normal buying environment returns.