Check out the Swiss Chalet Motel. It's a nice small place, very clean, free continental breakfast, close to downtown (10min walk from bars), and the free ski shuttle to RMR picks up right outside it's doors. You can get a room there for $75-$100.
Sandman also has the shuttle pick up very close to their hotel, so does Days Inn.
A $100 per person per night deal with ticket included works out the be the same as splitting a $100 hotel room amongst 3 people and then buying your tickets separately at the hill - same total price.
If you want to be closer to the action check out the Regent Hotel - it's right downtown, has all the amenities, shuttle pick up too, but not sure about prices or ticket deals.
I think you can find lift ticket discounts at liftopia.com (could be another site, can't remember)
What about renting a spare bedroom in someone's house? There is some of that out there, and you'd have people to party with and show you around the mountain. Check out The Stoke List http://www.thestoke.ca/list