30 articles about design with perfect English - 500 words

I am looking for 30 articles about design. I'm looking for very high quality articles and I'm willing to pay $ .25-.60 per 100 words depending on how nice the article quality is. These articles will need to be researched a little, but there are numerous cross over topics between the 30 articles. I will provide you with the title for each article, a main keyword, and a couple sub-keywords that you will need to write about. Each article needs to be a minimum of 500 words. I would need at least 5 articles a day. These articles MUST pass copyscape and the MUST be quality. Preference will be given to native english writers. I will be asking for a writing sample when you apply. Payment is via paypal.