Like all services online, writing related ones will have a reputation somewhere if they are established. Nowadays you cannot operate online without being noticed by someone, and with the high number of portals to leave reviews you should be able to find comments on any writing service. For example, this could be blogs, forums, social media websites and even review websites.
Some service websites encourage users to leave comments on their website as testimonials. However, you should be wary about reading these, because a service can pick and choose which testimonials to display.
You should give the service as much time as they need to complete the work. It is general practice that the quicker you ask the project to be completed, the more they will charge for your work. Try to hire a service to complete the work as soon as the assignment is given to you. This will enable you to hire a proofreader to go over the work, or hand it into your teacher early for some suggestions to improve.
There is no getting around it – you get what you pay for. If you have a limited budget and want to pay a low fee, then chances are that the quality of the work will be questionable. Therefore, try to spend a decent rate on the writing service.
Don't be scared to ask as many questions as you can of the service to make sure that you know exactly what you'll be getting. Also you have to give good quality directions to the service so that they can produce the type of work that matches your expectations.