Due to popular demand, we’re adding a low-cost manuscript review + passive developmental edit to help you find and fix the “cause of death” before you invest in editing or proofreading. You’ll get expert eyes on your manuscript, and while we won’t focus on or fix every little issue, we’ll help you identify the big red flags that are killing your book slowly. These are the places readers will give up and agents will ditch your manuscript into the slush pile. In-depth comments and suggestions will be provided to help you clarify and restructure your book, but this feedback is “hands-off”: we won’t go in and actually make changes, though we will point out signs of weak writing, repetition, and provide tips on how to improve as a writer. If you think your manuscript might be a mess, or you want to focus on the large, important stuff that matters most, this is for you.
Developmental editing (may also be called structural or content) – looks at the book’s big picture and overall structure in nonfiction or plot and characters in fiction. Developmental editors may assess a book idea, outline, or early draft to tell authors what works and what could be better. The big picture questions need to be answered first before an editor ensures your words are polished and used correctly.
It’s difficult to answer this question without first addressing what an editor actually does. Editors can review the content of your writing (characterization, pacing, plot, etc.), which is often referred to as content editing; the form of your writing (the grammar, the punctuation, etc.), which is often referred to as copyediting; or both. (By the way, proofreading is indispensable, but it’s the final step of checking for typos and other glitches once the book is ready for print—any writer who thinks that proofreading is editing is in grave danger of getting ripped off.)
From your comment, you may be in search of a manuscript critique, where you pay a professional to essentially conduct a beta read with the added benefit of their experience and knowledge about the craft. Then they’ll give you a few pages’ worth of considerations. When I don’t have the time for such critiques (and I only critique nonfiction), I refer my clients to andilit.com.

While you may (or may not) be correct in your assumptions, your tone in general is rude, and disrespectful. If you are indeed a true editor of distinct taste and experience, you should not feel the need to bad mouth others for their thoughts and opinions. Show a little decency, and realize that you are indeed speaking to a human being, who probably has thoughts and feelings, and is in my opinion, a much more intelligent human for having the intellect to not attack someone verbally for their thoughts. No one needs you to be rude, or asked you for that matter.

Another place to find professional editing service is the team at Ebook Launch. They have a team of professional editors who can polish your book for an affordable price. You can even get a free sample edit of 750 words to help you decide if they're a good fit. The small team at Ebook Launch also provides amazing book cover designs and formatting in addition to their editing service.

Freelance editors normally do not double as literary agents. Not only is it not our area of expertise, but it can actually lead to ethical quandaries. There have, unfortunately, been cases of literary agents saying that potential clients’ work “has potential” but needs to be edited (by them or their employee), for an exorbidant fee. It would also be possible for editors to give the impression that they are guaranteeing publication of a project, when that is something no one but a publisher can do. Many professional organizations forbid their members to combine these two roles, to avoid a possible conflict of interest.
It’s always sensible to follow due diligence in submitting your first draft of your book to an editor by making as fool-proof a copy as possible for you because first, it is your own creation, and secondly, a horrid draft sent your editor can end up frustrating both you and him or her. Make your own corrections to the extent you can, so that will make the job of your editor that much lighter and the end result would be a lot more effective.