Not to get trip-reporty, but:
According to Ski Magazine's rankings (from 2006, I believe) Tremblant is ranked as the top ski area in Eastern North America.
When my wife and I went there we flew IND
and then took a coach bus from YUL
to Mt. Tremblant. The cost for the bus was CDN30 or CDN40/person...not sure if that was for r/t or o/w. The only other options would have been 1) to rent a car r/t from YUL
instead of taking the bus, and then continue paying the rental fee while we were at Mt. Tremblant, even though we had no need for a car while there (pedestrian village), or 2) do a pair of o/w car rentals. Either of those options would have been more than the bus. So I would absolutely pay a little extra to have flown IND
instead of paying that money for the bus...assuming reasonable transportation existed between YMT
and the resort area.