Article Rewriting, native eng. only, 170 rewrites for $170

We're looking for (preferrably one person with english as 1st language) an article rewriter, first project will be a network of 10 or so sites with 15 posts each, existing articles are 400-700 words long, you need to rewrite them to pass copyscape and its ok to make them a little shorter (400-500). No research needed, just plain rewriting (no automated software, they have to make sense and use proper grammar. First batch is 170 articles, for $170, main topic is health (from exercising, over skin care to yoga and self improvement), after this is done there is more work lined up. Not an urgent project but 10-15 days should be enough to complete since it is a fairly easy task. You will get the articles in form of text files, and you send them back the same way after rewrite is complete, we are not asking for blog posting services. $170 Payment via escrow, and we get full rights to these articles.