We need a proofreader with an excellent eye for detecting spelling errors/grammar and other errors. I have lots of articles and I suggest a fees of 1$ for proofreading 7000 words. It works out to 2$-3$ per hour depending upon your speed.
All my writers are professional writrs so the chances of errors are minimal. I would also like my proofreader to take responsibility of suggesting which writer to let go in case his quality is poor as I believe in keeping a small group of quality writers whose work needs minimum proofreading.
I am not here to burden you with low quality work and expect you to turn it into a masterpiece. I only expect you to read my articles and correct any typo/spelling/grammar mistake made inadvertantlly by writer. Those writers who consistently make errors will be removed on basis of your recommendation.
So I would like a proofreader who is either a native english speaker or someone with high qualification in english and who can proofread documents at a high speed rather than a proofreader who spend a lot of time and effort as it would be a waste of both of our time.