content writing

I need content writers for my website. I am looking for some one who have experience in writing content for landing pages and as well as inner pages. Obviously you should be knowing what keyword density is and the target keywords for each page. The content has to pitch for sales. The content will be checked against copyscape and should be original. Content that do not pass copyscape will not be paid. Initially I am looking at content for about 10,000 words. Please provide me with sample of your previous work.