Native Proofreader and Editor is needed.$0.4/500 words.. - repost

Hi, I am looking a native speaker. I have 25 articles for proofreading and editing! These are written. You have check for errors. You must replace those words or lines with new ones. You have to set the keyword density! You have to edit and proofread [login to view URL], you have to make some modifications in the articles to make them attractive. Each article will be of 500-600 words(Mostly, 500 words). Please, set your bid rate according to the mentioned price and 25 articles i.e. $10 for the total project. Only Native speakers. Thanks