THE CHEAPEST WAY FROM GENEVA AIRPORT TO ARC1950 (Geneva)

Dear friends, can you give me some tips concerning my future trip to Switzerland;
we need to get from Geneva Airport to Les Arcs Protected content
Rent a car just only to get there from the Airport and to get back to the airport after a week's stay (28.12. Protected content is very expensive.
Swiss taxi is also very expensive.
We'll be Protected content child Protected content .

Thank you very much in advance
Best regards from Saint Petersburg
Ekaterina