Copywriter needed to re-write 5 articles

We have 5 articles that we need re-written 7 times each. All articles are around 500 words each. We will either select one bidder to do all 35 versions or we will select 7 bidders to do 5 articles each. Please post your price per article and we'll tell you how many we'd like you to do. Please note, that we need high-quality re-writting. There can be no grammatical or spelling errors. The new articles must not detract from the original layout idea, but feature different wording so that it comes across as fresh content to the search engines. It's very important the that quality of the articles be high. This is not just for SEO. We plan to have visitors reading these articles and choosing to hire our firm based on the professionalism in how they flow. Kindly submit samples of your copywriting work if you have experience. Experience preferred.