Article Rewrite about Ovarian Cysts

Hi, I need an article rewriter, who can work for me on a regular basis if this project is successful. The topic is about Ovarian Cysts. There are 20 articles to be rewritten. The rewrite must be 100 percent unique and I will check with CopyScape Premium. You have to have a good command of English and the article must be without grammar or punctuation errors. Only serious bidders are considered. From my side, I can offer regular work and regular payments. Please tell me your rates for 300 word, 400 word, and 500 word-article. Please send me your samples of writing. Thanks Albert.