I also added the option for installment payments in addition to the module. Many clients were happy that they didn't have to save money for the course, but could simply buy it and pay in parts. This also benefited me, as the number of students with this option increased. Soon, I will start conducting lessons on the Prodamus platform. There, you can choose parameters (number of students and GB) and find out the cost. In the end, I can say that the service is very convenient for both me and the clients. It's easy to use.