Ebook Launch helped make my first self-publishing project a success. They responded promptly when I had questions prior to hiring them for a custom ebook cover and .mobi and .doc formatting. Their price was about half what was quoted by format and book cover freelancers, so I was pleased that I got my money's worth. They sent two book cover variations and we worked through suggestions to improve on one. My book cover design turned out great. I look forward to working with them again in the future.
A good editor is invaluable when starting out. Later on it perhaps depends on how complex the story or writing is. Editors can be looking for similarity not originality. The final script a poor representation of the original story or article. An article of mine, which was picked up by Wikipedia for its originality and informative ideas was given forty edits from around the world! It was like a mechanical invention rather than an interesting article in the end!
I just published my fourth ebook novel recently and I've used Ebook Launch every time with very satisfactory results. They always promptly turn around the cover and manuscript formatting - and as an added bonus, they always promptly and happily answer even the stupidest questions I come up with. Adrian is very easy to work with and Dane has repeatedly come up with cover ideas when I was fairly sure that it couldn't be done.
Use the media press kit on an editor’s or publisher’s website. A media press kit is a prepackaged group of marketing materials that provides commonly-sought information to reporters, other writers, and members of the general public. Look on a publisher or editor’s website for a tab that says “media” or “press” and review their press kit for information on how to contact an editor.
I cannot speak for all editors, of course, but I know I and many of us would be open to editing just part of your book at first, say, a particular chapter or two that you sense needs a lot of work. That is often enough to show you mechanical errors that you tend to make repeatedly. You can then go through the entire manuscript yourself looking for as many of the same kind of errors as possible. You will sharpen your basic writing skills in the process, and it will pay off in all future projects.