The pros and cons of various ebook sellers when self publishing your book.
I've published some of my books with various ebook publishers, so I thought I would write a post describing my experience with each of the ebook stores I self-published with. Some of the following points are straight forward facts, e.g. 'Smashwords let you generate coupons for discounts and promotions on your books.' That's a fact. Other points though, are my opinion, so in the interests of fairness this article should be read with that in mind.
Here are the pros and cons that I experienced with each ebook publisher.
Note: This article was published in 2016. Some of the following details may have changed since that date, so do your own research before making a final decision on self-publishing.
Kindle Direct Publishing is the self-publishing service for authors who wish to publish their books via Amazon.
 
Pros:
|  | 
| Amazon kindling. | 
1) Amazon have a large chunk of the ebook market, so 
offer a bigger potential for sales. As a rough guideline, a figure of 
around 65% market share is quoted by most ebook market analysis 
websites.
2) Before finalising publication, you can download a preview file of your book which you can view with the Kindle Previewer tool, or on your tablet if you have the Kindle app. 
3)
 If you enroll your book in KDP Select, i.e. make it exclusive to Amazon, you 
can offer your book for free five days per quarter. If you only have 
one book this isn't really a great sales strategy nowadays (the benefits
 of free promotions aren't what they used to be), but if you have a 
series of books then a free introductory book can lead to increased 
sales of the subsequent books in the series.
4) Amazon Prime 
members can borrow one book per month for free. If you enrol your book 
in KDP Select then your book is eligible to be borrowed, and each borrow
 earns you a small payment.
5) If you choose to get 
paid by Electronic Funds Transfer (EFT) then Amazon have no payment 
threshold*, so you don't have to wait for your royalties to build up 
before getting paid.
* This applies to UK and US authors, but check Amazon's terms and conditions if you're based elsewhere in the world.