Fantastic post! Includes royalty rates and capabilities.
Here’s a sample (verbatim from the post):
Payhip
Payhip will help you do most of the hard work: host your eBooks and securely deliver the eBooks to your customers. It will also handle payments through PayPal for you; all you have to do is upload your eBook to start selling. Once your eBook is on the site, you can promote your book anywhere (FaceBook, Twitter) with a link for your eBook page.
Sign Up [Free] | Royalty per Sale [100%]
To view the whole post, visit:
http://www.hongkiat.com/blog/sell-ebooks/
This is one resource I’ll be referring to again.