Proof read book 110,000 words

I have had two proof readers so far and both have let me down. I need somebody who is prepared to sit down and read my book. That doesnt mean push it through grammarly but to actually read the book cover to cover.

Project is to
1 Read every word of every page (110,000 words, 464 pages)
2 Fix the OBVIOUS errors ie typos, words missing, words to be deleted.

It is NOT
1 to make changes to the text or grammar to make it sound better
2 reconstruct sentences, paragraphs
3 do anything clever

the book is already published on amazon and so this is a final read, i have already read the first chapter and found 4 mistakes, hence why i need a fresh pair of eyes on it

Note - this requires a native, English speaking person for whom English is their first language. It will take around 6 hours to read the whole thing I am guessing which is why I think £80 is reasonable.

I would like somebody who is available immediately. The book is available in pdf copy or it can be supplied in hard copy for UK residents.