Writing Short Articles

I am in need of a freelancer to write some short articles for me. Each article should be around 500 - 600 words in length, the topcs vary, but are all easy to write about with a few minutes of research. I value price and speed over all, so keep the bids competitive and please give a realistic timeframe to finish one article. This will be ongoing work, i potentially have hundreds of these articles for the winning freelancer.