Articles needed for Link bulding

I'm looking for someone to write articles about my niche sites. all topics are general keywords, no need of special research. Rules (1) It must be ORIGINAL and should pass copyscape. (2) Excellent grammar, spelling, punctuation and editorial skills etc. are expected (3) 8-10 Keywords (4) Each keyword need about 5 articles (5) article rewrite allowed. However it should be unique. (6) $1 per 350 article (7) Delivery time can be up to 10 days.