Article rewriting / spinning

We have 20 500-600 word articles on a very specific subject (video game strategy) that I need rewritten or spun. These articles need to be 80-90% unique and need to pass copycape. Please provide samples of original articles you have rewritten. The articles need to remain in a North American natural speaking tone. The job is for an English speaker. My preference is for handwritten rewrites, however if you can provide confidence in your ability to create natural articles using software like BestSpinner then this may acceptable, but the articles need to proofread for spelling and grammar errors. We can pay $1.00 per rewritten/spun article. You should be able to communicate via msn or skype as well.