2. In addition to follow-up, your English level is also different from the reported stage. The mature IELTS training courses are all staged (different stages are based on different foundations, so the advantage of this division is to make good use of the steel on the blade and avoid wasting unnecessary time). Often zero-based classes have more class hours and higher fees. There are also IELTS 6.5 or IELTS 7 classes, with different target scores and different fees.
In addition to the above two, there are also training institutions, and the fees of each institution are different. Personally, I think the tuition is worth it as long as the service they provide is worth it.