Not sure how telco taxes work in Japan but it would be impossible to advertise an accurate tax-included price in my city because not all the residents of the me

Not sure how telco taxes work in Japan but it would be impossible to advertise an accurate tax-included price in my city because not all the residents of the metro area have the same tax structure. Zip code isn't enough. The full address is required. So TV and print advertisements are pre-tax. I don't see how it could work any other way.