We went to Vancover and Calgary last summer, it was a nice trip, but very expensive. We flight to Vancover, pick up a rental car at airport, drive around, spend 3 days there(victoria, parks, north vancover), city is very beautiful, food is great, then we drive to Banff, Calgary. We spend around 1500$/person, restaurant, car rental, gas, hotel(even hostel is more expensive than here), join group may be a good idea.