In order to encourage people to take the bus and make your trips in the valley easier, the use of Chamonix Bus is completely free (except Chamo'Nuit and special buses). You will only have to get your personal card:
Local Citizen Card: available to those living mainly in the Chamonix-Mont-Blanc valley
Valid for 2 years.
Resident Card: available to those working in the Valley during the saison. Also available for those having a second home in the Valley.
Valid one Winter or Summer season.
Guest Card: available to guests staying at least one night at an official hoster or at friends.
The card is valid for the staying time during the season (less than 5 months).
Skipass: All skipass allowed you to use the Chamonix Bus lines for free.
If you cannot benefit from these cards, you have to buy a bus ticket to the driver:
Day ticket = 3 €
One way ticket with Chamo'nuit (night bus service) = 2 €