The site may be able to write you an essay without plagiarism, but the second you turn that essay in, you have committed plagiarism. You didn't write the essay, you paid for someone else to write it. Those aren't your thoughts, ideas or beliefs on the paper. The disclaimer on their website stating that their essays are for research purposes only is basically just their way of covering themselves from you trying to sue them if you are accused of plagiarism. The fact they aren't willing to stand behind their product should be a sign that something about what they are offering isn't straight forward. School is about learning, and you learn by doing. If you aren't good at writing papers, and you pay to have someone else write you a paper, that makes you no better than you were before at writing.