As long as you are a student, you are probably on a budget and can’t afford a costly essay. But still don’t choose the cheapest one, since it definitely doesn’t provide the highest quality, especially if the essay is promised to be done in the short term. At this point, it is likely to be plagiarized. Though there can be discounts for loyal customers which are a common thing.
Dissertations need expert writing, and you will need thesis writing services. If they are up to that level, then you will have a better chance of finding a quality company. This will ease the pressure that comes with your dissertation especially to graduate students.
Every person has a writing style that most professors are able to tell because they have marked your work for long. As such, the writer that you settle for must be able to match the essay with your writing style.
Round-The-Clock customer service is no last thing because it ensures the order will be done in time and exactly the way you wish. There are always unexpected issues and questions that might appear, and the most convenient way to solve them is to use customer service, which should be available at any time. Bear in mind that not every essay writing service has direct lines with staff and implies communication by emails and there is no warranty your order will be done in time.
Some of those sites employ non-native speakers and writers without university degrees and that might impact on the quality of their works. To avoid this, read as much custom reviews as possible. You can also check the requirements for applying on the service as a freelance writer.