Article writer needed-long term

Topic or description of what I need written: I will need articles on regular basis under various categories like health, finance, marketing, business etc. To start, I need 10 articles of 500 words on different topics which I will provide to the winning bidder. What I already have versus what the provider will deliver: I will provide the topics and the keywords to be used. The provider will be required to deliver good quality articles on these topics as per instructions. Other context/requirements that providers will need to know: I will prefer providers who can work on long term basis. I will chose provider/providers who can provide quality articles at a resonable price. Payment will be made weekly, and $1.5~$2 for one areticle according to the quality of your article. Specific expertise that I am seeking: Knowledge of SEO is a must for these articles. Timeframe for delivery: Withn three days.