For comparison, in Berlin the monthly ticket for the A-B zones (does not reach the airport) costs €86, and a 4-ticket pack €9.40. A €9 monthly ticket is an insa

For comparison, in Berlin the monthly ticket for the A-B zones (does not reach the airport) costs €86, and a 4-ticket pack €9.40. A €9 monthly ticket is an insane bargain, even if you only plan on using public transport within the city. (source: https://www.bvg.de/de/tickets-und-tarife https://www.bvg.de/de/tickets-und-tarife)