Obligatory deposit. You have to make a deposit before a writer starts to work on your task. However, this requirement seems reasonable for successful collaboration. Besides, you keep this deposited sum on your account and release it only when you double-check the result.
Long preparation. You will need to take some time and prepare the materials, templates, examples, if any, for your writer. He or she will need this information to understand your instructions and the requirements of your professor better. If you skip this step, there might appear some misunderstandings that will influence the final paper and, as a result, your grade.
Fewer bids for urgent orders. The number of bids from writers may depend on your deadline. If you have only a few hours before submission, some writers may not have enough time to help you. Even though it leaves you a limited choice of writers, you will still find someone to assign for your order.