I have an eye and feel for the English language and can detect errors quickly. As I am in my late 40's I can draw on my diverse knowledge and experience to also detect and rectify factual and common-sense errors. I am a habitual internet surfer and quite adept at researching any topic on the wwweb. Being an English tutor, I am accustomed to catching and correcting language errors.
Going by your project description, I understand you will pay a fixed price of $1 per 500 words. However , you have posted the project with an hourly rate which implies that you'd expect an output of rewriting about 6000-10,000 words per hour, which I think is quite unrealistic even for highly skilled and experienced writers. Assuming the subject matter is general and fairly familiar to most people, in my opinion, even a skilled writer would take about an hour to rewrite about 1500 words. A lot depends on the original written content too. If it is ill-written and incoherent than it may take more time and research.
I am hence restating my bid as being for every 4500 words rather than for every hour. The first milestone would also be for 4500 words which I would deliver in 2 days. The quality level of output would be rephrasing/paraphrasing of language and grammar correction while retaining the meaning/sense in given articles.
Thanks for the opportunity. I look forward to hearing from you