Fees will stay the same. For now.
My biggest expense is heating costs in winter, and maybe in winter I will have to introduce a Heating Charge to cover that. Or give everyone blankets during class?
Meanwhile, what are you doing to save money as everything becomes more expensive?
I am going to try and and make my own lunches every day, AND take a PET bottle of water from home. That must be cheaper than convenience store lunches and buying water.
In the Uk, the sales tax is 18%, so many things seem cheaper to me in Japan: many foods and gasoline. Even city transport.