Time and again I've reported on publishers boasting that they've seen ebook revenues double in 2011. And these were Agency publishers with higher priced ebooks. They still managed to see a significant increase in ebook sales in spite of what I see as questionable ebook prices.
The latest news came from Hatchette back in November. Technically Hatchette reported that ebooks were 21% of revenue, not that ebook sales had doubled, but unless Hatchette did something new with their prices then they are still seeing a much larger increase than Bloomsbury.