Article Writing

I need someone who can research and write original articles on various subjects which I supply. For example hayfever, detox, photo paper etc. The articles need to be approx 400 words each and I will have full owner rights. The applicant needs to be fluent in English and have excellent English writing skills. I will require approx 50 - 100 articles a month, possibly more. I am willing to pay $2- $3 per article. Payment will be made when articles have been recieved and are proven satisfactory.