The much-anticipated January 2011 AAP ebook sales report shows the spike that many expected: among the 14 publishers who contribute data, wholesale ebook sales jumped to a new all-time high of $69.9 million. As a result, ebooks comprised 23.5 percent of all trade book sales for the month. (In December, ebook sales of $49.5 million comprised just under 8 percent of trade sales.) That big increase is consistent with the surge of new ereading devices and a traditionally slow month for new print book shipments–and is in step with reports from Sourcebooks that digital sales hit 35 percent in January, […]