1. For the money to get someone to review your paper, you can get someone to write it for you. http://www.bestwritingservice.com/ has essays for ten dollars a page. If you're willing to pay someone 20 bucks to review your essay, you're willing to pay 50 to write it.
2. Most universities have writing centers where people will review your papers for free. These places are oddly underused. The people who would go don't need them, and the people who don't know don't realize they do.