If you instead decide that self-publication really is the right option for you and your book, this means that you have chosen to serve as both the author and the publisher. That means that you will have to (A) perform yourself, (B) find friends who will perform for free, or (C) hire professionals to perform all the tasks of a traditional publisher, from editing to marketing to distribution, all on top of performing the tasks of the author.
“I am the self-published author of four novels: both ebooks and paperback. I have used the formatting and book cover design services of the amazing team at Ebook Launch for two of these titles. I’ve found all at Ebook Launch to be patient, incredibly helpful, super quick in delivering, but above all, very professional – and reasonably priced to boot! I wouldn’t hesitate to recommend Ebook Launch for your next project; these are, without doubt, the go-to-guys for the self-published.”
I would absolutely encourage authors to find someone who fits their budget, offers payment plans and will work with them to get the services they can afford (some authors might be able to get away with just a manuscript evaluation, for example) I have to agree with the previous comments. Someone who is working for two bucks an hour can’t possibly be a professional, no matter how fair their prices, and that does not bode well for your end product.
Proofreading is the vital last step of the book editing process. After your manuscript has received its professional edit, your book proofreader will perform a final review to fix any remaining mechanical and grammar issues before your book is printed and published. Proofreading is not a structural edit and instead focuses on eliminating minor mistakes and inconsistencies.
Another great resource is Reedsy; a platform for finding freelance editors, writers, and all things book related. You can also use the Editorial Freelancers Association to help narrow your search. These websites are fantastic because they vet their members, meaning you will only be viewing the best of the best when it comes to editing. Keep in mind, Reedsy prices will typically be higher than going to an editor directly because the website, rightly so, takes a commission (from both the editor and the author) for finding, vetting, and then managing your contract.
Regarding your last question, I know of no editor who gives a money-back guarantee for occasional errors that happen to slip through or for a different opinion by a later editor. I’m afraid such things are just the nature of the publishing beast. But by having a shorter portion edited first, you will get a decent feel for whether someone is the right editor for you, and will be able to be confident in his or her work on your entire book.