Reliable Proofreader wanted 3

Hi, I 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 2$ for proofreading 7000 words. 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 native english speaker with masters in english or similar qualifications and guarantee that no error can be found in his/her proofread article. I am attaching a document with 2 small articles. 1st is normal article with typos and few grammar and other errors which you can find in routine articles. The 2nd is bad article which has many errors. None of my articles would be like the second one but I want to see your skill in modifying both articles in case you encounter them. You need to make corrections in US English.