When you need a cheap research paper that is written by a professional, you do not need to spend a lot of cash on a pricey service. The custom writing service could help you save up to 50% off your research paper. There are three kinds of writers to choose from . You pay a fixed amount to paper writing service select an expert writer to complete your job. If you require a high-end writer, you can pay another 25% more to have him write the essay you want. EssayShark provides three free revisions.