I chose PublishNation to help publish my book because the price seemed so reasonable. With the money I saved I asked for a Critique Report. This was about eight or nine pages long full of suggestions of how I could improve my book. It took just a weekend to implement the changes and it went from being a book that was good enough to one I was really proud of.
I then took advantage of the Light Editing service which includes both proof reading and some editing. I could find nothing online to beat the price. All work came back exactly on the specified due date, and the whole thing seemed pretty faultless to me.
I dealt with David Morrison by email. Every request or query I made was responded to effectively and efficiently either on the same day or the next day. There were no hidden costs. I would heartily recommend PublishNation to anyone confused about the self publishing process.