Blog Writer Needed

Hello. I am looking for somebody to produce me some blogs. There will be 5 products/pages that need a blog writing on each one, then each changing to be slightly different so that i have 10 variations of each blog (so 50 articles in total). Google must not see each variation as copied content. Each blog is to be around 500 words. No copied work, and must be in perfect english. I require all the blogs emailing to me, then once i have checked that they are all unique then money will be released. Thanks Stuart