I need an American / Naturally English speaking writer to rewrite articles so as to pass copyscape and viewed as original content. Word count ~ 600 words. Need several articles a week. The content is technical and should not be changed but need slight alterations in order to be viewed as original content and must insert naturally keywords with 1-3% density. Please let me know how much you will charge me per hour or per article rewrite and kindly PM me your sample articles so I can check the quality.