I can only tell where I am selling the most ebooks, and that is definitely the Apple iBooks Store. I think it is because of the way they are presented. It's easier to find Indy books among the listings at iBooks. Once a book starts selling well, it shows up on Kindle lists, but otherwise it can just sit there. Here are the sales to date for His Robot Wife.
|Smashwords 60 |
* Kobo seems to be having a problem importing new books from Smashwords. Both say they are working to fix this. Note also Amazon includes both Amazon.com and Amazon.UK.