I have used Ultius for about the past 3 years for various classes and projects. Overall quality is good and the prices are very competitive. You may encounter some writers who like to use a lot of filler words to meet the length requirement and there have been some instances of APA formatting errors. If you use them, try to give them as much lead time as you can. Be as descriptive as possible as to what you want in your paper. Upload as many samples and rubrics as you can so that they have a good idea as to the direction that your paper should be written. If you find a good writer, try to request them in the future so that you get the same quality and met deadline as before.