Article Writer Needed $1 per 500 words

I need an article writer that can type very good English and work for around $1 per 500 words. This is a long term project and I need a lot of articles every week. You must be able to make everything perfect including grammar, etc. It also must be rich with keywords. Pay will be a weekly thing via paypal based on the number of articles that were written the previous week. If you can't do at least 50 articles or so a week, then please don't bid. The more you can do, the better. Also, you must be able to write over many different topics. I don't mind if you read other articles and get ideas, but it must be 100% unique. Every article will be tested with copyscape. I'm looking for someone quickly, so please let me know if you can do this.