Grafta is bang on. If no car, a good option is to work at Sunshine village and live in on hill staff accom. U will get a 3 mtn pass with that. And u have more good hills within close distance (ie: kicking horse ticket with return bus inc. for banff locals $55) If you buy early bird passes, they are usually about $600-700 per hill... then $1000+ at full price.
If you have a car... anywhere works. The south kootenays is a good region with castle, whitewater, fernie, red mtn, and whitefish all close.
Best multi-hill pass is probably the new one that includes louise fernie and castle.
Just don't go to Revy, it's not as good as peopke say
In western canada Staff accom from employers costs about $150-235 mnth paycheck deducted. Bedroom to rent in someones apartment usually costs about $350-500.