PriceList
Public list price of lessons and trainings, per school level
List price of lessons and trainings for every school level
Public endpoint. What a visitor with no account would be charged: no promotion, credit or teacher regime applies. Without city_id it is the general list; with it, the list of that city (falling back to the general rows it has none of its own for). Each entry carries `generic`: true when the level has no row of its own and inherits the any-level price, so equal levels can be grouped. Only prices in force today are shown.