Amazon has major changes going on and from the posts I read on the Kindle Scout FB group, the authors there are all in a panic. In April, Kindle Scout became extinct. Now, CreateSpace will soon be a thing of the past. All the print books published by CS, will be migrated to Kindle Direct Publishing.
No telling what will shake out next.
This is just my personal opinion, but I've been small press published, traditionally published, and indie published. I've gone wide, and I've gone Amazon exclusive. I've published with CreateSpace and Ingram's Lightning Source.
Critics can bad mouth Amazon all they want, but until something changes, they offer the best deal in town. They pay sales royalties and per page royalties at a decent percentage...and they pay on time! And, their customer service out performs any I've dealt with. You contact them via computer and have a choice of how you want to be contacted in return. If you choose "call now," the phone will ring within seconds, and you'll talk directly to a human. If you email them, they will answer within 24 hours.
If you need changes made to your book info or find a problem, you can contact Author Central, and again, the response will be fast.
This isn't to say Amazon is perfect. There are aspects of it I dislike, but again, until something better comes along...