Every novel is unique, so it's not possible to give a one-size-fits-all price. The best suggestion I can give any writer looking for an editor is to get a sample edit.
Benefits of sample edits
You get to see my editing style.
You get to see if my suggestion/editing style is a good fit for your needs.
I get to see your writing style and create custom time and cost estimates that reflect your manuscript.
Considerations that go into the cost of an edit
Every author has different writing skills.
Has the novel undergone any previous revisions from feedback?