ETA: I somehow read "math" in there, when you said "male." But you can search different subjects.

This is what I use for my language studies, and my son has taken literally hundreds of lessons in Spanish and Japanese. I don't know how it works with other subjects, but in my experience, some will be good, some great, and some merely cheap as dirt. But some of the good ones will also be cheap ones, who happen to be working on a different economy. You can try out various people, but keep in mind that they don't get paid for the trial lesson, so I am very careful with that feature. I do, however, buy 6-12 hours with a certain tutor and then move on to someone else just for a change, but math might be different.