To approach an editor about getting their paid input on a manuscript can be frightening. You are paying someone to be brutally honest (at least they should be). Are you a good writer? How much more work needs to be done? Is it worth it? Well all of that depends.
One of the best ways to tackle those questions, before even worrying about how to publish the damn thing, is to get an estimate from an editor based on a sample of your work. I am learning this process and currently working on a dear friend's manuscript. I hope to continue working with her on it, but even as a green editor I can't gauge if I am a good fit for what she is looking for.
Writers and editors don't have to see eye-to-eye, but they do have to find a certain common ground. But, at the end of the day, who is right? The editor has a certain compulsion to fix every little thing, while the writer wants to keep every unique turn-of-phrase even when they become overwhelming and distracting.
You, whether the writer or editor, must be open to collaboration. You must be open to discussing the choices and options that each manuscript can take. A fresh set of eyes can see a whole different pallate of colors.