Closed classes range from 1w-7w. Generally, such institutions have special schools to study. You can live in it for a month, just like a boarding school. This kind of self-control is particularly poor, and it is very important, that is, economic conditions. After all, there is no accommodation, living expenses and so on.
Face to face. This is a traditional class. There are one-on-one, large classes and small classes. The price is linked to the learning effect. One-on-one is the most expensive, and large classes are the cheapest. It may take thousands of dollars to get it. But to be honest, I personally suggest either small classes or one-on-one ones, which is the most cost-effective. I was in a small class in Yi Shiying, and the effect was not bad.
Online courses range from 6K to 8K. The biggest advantage of online courses is the freedom of time and place, which is relatively cheap. But pay attention to whether you buy a recorded broadcast or a live broadcast. In this kind of class, it is difficult to ask the teacher when you encounter problems, because it is impossible to stop the progress of the course for you alone.
So the price is hard to say, and it has a lot to do with your choice.