From Digital Book World:
The global average ebook price has dropped 8% year-over-year in the first quarter, according to Kobo ebook sales data presented by chief content officer Michael Tamblyn at the IDPF conference in New York.
Worldwide, ebook prices have been fluctuating between $7.00 and $9.00 dollars, with an average selling price lingering at $7.50, according to Kobo’s data.
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Self-publishing is having a substantive effect on the average price of an ebook, not only because those titles tend to be low priced but also because of the large and growing volume of self-published ebooks on the market, said Tamblyn.
Since the launch of Kobo’s self-publishing service Writing Life, those authors comprise 10% of the company’s unit sales. Adding in self-published authors using other services that Kobo distributes, Tamblyn said that number jumps to 20% of unit sales.
Link to the rest at Digital Book World