The tuition fees of college tutors vary according to different regions and education levels. But it is inevitable that the charge is too high.
Parents who hire tutors with high salaries have the same characteristics. They are generally not well educated, but they are very rich. They are usually busy at work and have little time to take care of their children's study and life. They all pin their children's future on their tutors, so they will spend a lot of money to find a suitable "tutor" for their children.
But this is a kind of destruction and plunder of public education resources, which harms the interests of other students. Therefore, it is understandable to hire a tutor with high salary or "sky-high price", but it is not worth popularizing.