It’s often difficult to get hard numbers for eBook sales, but this graph from the International Digital Publishing Forum gives us something close.

Check out the sharp curve from 2008 to 2009, which is the year that the Nook and other eReaders were released, including the second-generation Kindle. The second generation of anything is often better than the first, and the people who wait for the second of everything to come out are what form the bulk of the market.

Impressive.

From The Associated Press today:

Amazon offers new royalty program for Kindle books SEATTLE (AP) _ Amazon.com Inc. said Wednesday it will begin offering do-it-yourself authors and publishers a bigger cut of book sales on its Kindle e-reader _ but with strings attached aimed at keeping prices down for consumers. The company said that starting in June, it will offer users of its e-book self-publishing program, the Kindle Digital Text Platform, royalties on book sales of 70 percent after delivery costs. With those costs equaling less than 6 cents per book, Amazon said authors will be able to earn $6.25 per copy on a book that sells for $8.99, rather than the old rate of $3.15.