And a word of warning. The Editorial Freelancers Association, mentioned in this article as a potential source for finding an editor, does not vet its applicants. Anyone, including “self-proclaimed” editors, can join. As stated in the membership guidelines: “Any full- or part-time freelancer may join EFA.” It is basically a listing of freelancers offering services online, and for a fee, members can have access to a job board. While some legitimate editors list themselves on the EFA, so do a lot of other people. Membership is by no means evidence of professional qualifications.
Whether you’re just starting out, or you’ve been writing for some time, it’s no secret that the most successful writers specialize in a niche. Why? Focusing on a niche helps you become an expert in that area, write better content, ask better questions, and know where to find sources and research. The best editors typically specialize in one or a few niches for similar reasons.
The greatest benefit of an editor is that he or she is not the author. An editor is someone else. Some editors are professional writers, but every single one of them is a professional reader. As a writer, you’re probably a voracious reader, but you can never be a true reader for your book. By bringing forth a book into the world, you’re asking other people to read something you’ve never read. If you sincerely want the book to be the very best that it can be, then you must ask someone else to read it first. You owe it to your book, to yourself, and to your readers.
I do developmental editing mostly, so I charge a flat rate to read once and build an action plan, half before and half afterwards. Then we contract to work through the plan, where the bulk of the editing takes place and for this I charge 25% up front, 50% after the developmental edit, and 25% on completion of the final proof. I find that authors appreciate the spread payments and the transparency this brings.
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.