artcles writing

write articles about affiliate marketing, how to promot affiliate marketing, how to promot affiliate marketing links in facebook twitter, blogpost craiglist etc 1) be written in perfect US English, 2) researched from 5-6 good sources creativity 3) pass Copyscape, 4) no spelling, punctuation or grammar errors, 5) 100% unique, original and on topic, 6) keyword phrase in the text 2 - 3 times 7) written with the point of view of search engine optimisation (SEO) minimum words per articles is between 400-500 words. you can write or rewrite if you need i give some blog post about affiliate marketing. i need total 6000-6500 words budget $50 max