According to Publishers Weekly:
The rush on e-books also caused heavy jumps from 2009’s sales figures. Simon & Schuster reported a 150% jump in e-book sales for this holiday over the same period last year. Random House reported an impressive 300% leap, and Kensington said its e-book sales for this holiday season climbed a whopping 400% over 2009. Here is a compilation of publishers’ top five bestselling e-books (in descending order) for December 25 and 26
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