As every job is different, so is the price of editing.
Clients often ask how much the editing will cost per word, per page, per job or per hour. The cost of hiring a freelance editor varies from job to job.
In order to properly quote a price (and avoid surprises in the end), I often request to take a look at a sample of your work to determine what will be involved.
Keep in mind that how much editing is needed, or wanted, will determine how much the job will cost.