Article rewriting

I need to rewrite some articles, related to web design, photography, wordpress etc. So you need to have basic knowledge of web design, PHP and Wordpress. Here are my prices: $0.40 - for checking the grammar and the spelling of an article, plus minor rewritings. $0.75 - for a rewrite of an article with max 300 words. If the article has less than 300 words you need to complete it. $1 - for a rewrite of an article with around 400-500 words. I'll provide the article, and you will rewrite, trying to keep the keywords intact (and in some articles to add more sentences reach in the main keyword), but it must be different, ie, to the search engines. Please provide me some examples of some articles rewritten by you. Native English writers will be given a priority. Bid only if you accept my pricing.