Will the fare to the sales office be free when purchasing a commuter pass? In the case of cancellation, will the return fare on the day of cancellation be free?

It is as follows.

Municipal Subway allows you to purchase commuter passes at all stations, so it is not free in principle.
However, when purchasing some commuter passes with limited sales locations, or when purchasing a new commuter pass that requires confirmation by a staff member, you will come to the station before the release time and offer to purchase at the station where you get off In such cases, we will return the fare equivalent to the station where the sale will be made.
※There is no such service on the bus.
[Usage procedure]
1 Please purchase a ticket to the station where it will be sold.
2. Please inform the ticket gate staff that you will go to the station where the commuter pass counter is located. I'll attach a guide slip to the ticket.
3 Please take the train to the station where the commuter pass counter is located.
　(When getting off, please use the manned ticket gate with station staff without passing through the automatic ticket gate.)
4 When purchasing a commuter pass, please also submit a ticket with a guide slip attached. I'll give you a refund on the spot.
5 At that time, customers who need a return ticket will be given a commuter pass "purchased certificate", so please use the certificate and return.
(If you are using a “purchased certificate”, please pass the manned ticket with a station staff instead of an automatic ticket gate when getting on and off the subway.)

Municipal Subways do not issue free tickets or refund fares for return trips after cancellation.
In addition, in municipal bus, we issue ticket (municipal bus day valid boarding certificate) which can be used only on the day of cancellation.