Book editing is a thorough review that focuses on identifying any structural, grammatical, and factual errors. The editor then rewrites all the errors with detailed reports of all the errors and amendments, There are several online book editing services that provide decent editorial reviews at affordable prices. In addition to their low-cost, they also take less time as opposed to traditional editing agencies that only serve major publishing companies and charge ridiculous amounts of money.
Hiring a freelance editor is not the same as editing a book. Book editors are often classified into three types: developmental, line/copy, and proofreading, and the great majority of them are employed by the book's word count rather than by the hour. There are many professional children's book editors who charge according to the word count or according to the number of pages. So the charges for book editing are uncertain