The partnership with A1 covers the cost of driving for 1 hour per month through one user account, regardless of the car you choose and the kilometers driven during that hour. It applies from the moment you start until the moment you end the session.
Additional services, such as reservations longer than 15 min and parking at locations with an extra fee for ending a session (e.g. Sofia Airport), are not included in the A1 program and are paid separately.