Most tutoring services have a perverse incentive to try and sell you more tutoring hours, because the more they tutor, the more money they make. Frankly, for many years I’ve had way more tutoring requests than I could accommodate just by myself. I could have hired a legion of “tutors” (i.e. people with high USMLE scores who may or may not be committed educators) and “trained” them in my methods, but the experience for you the student can be too hit-or-miss.
Group tutoring turns what would have been at least 50 hours of individual tutoring into a guide to the most efficient way to improve your score. Because of the many pre-recorded modules, you can watch them when you want to watch them – you don’t have to wait to go over it with your tutor. And because I’m not wasting time by giving the same biochemistry/cardiology/ventilator lectures to 50 people, each hour of one-on-one tutoring time can then maximally help you improve your exams. Things like tailoring a plan to your specific situation so you can waste less time on tedium and spend more time on the things that matter. Or giving you individualized feedback on your question interpretation so you can do questions faster and get more right.
Because of the huge time-saving benefits of group tutoring, not only do you save money and have each individual tutoring hour be more effective in helping you, but I am also able to serve more students. As such, I require all students doing individual tutoring with me to also be in group tutoring.