I had a 400 pages book to be proofread and reformatted. I payed more than 3k POUNDS wich is undoubtedly a lot of money. They indeed worked on the plagiarism check, on grammar and syntax, however, no consideration was put in the professional formatting. This aspect was really poor, basically I played for it and never got it at all. So their services are good in a way but do not expect professional book formatting.