I want a snowmobile capable of...
climbing moderately steep hills
carrying a passenger along with the driver
needs to be reliable
needs to be cheap... preferably used

I intend to use it 90% for snowboarding (backcountry kind of stuff, Cascade range specifically) so comfort features don't matter much, just two seats and enough gusto to get up the hill I want to ride down.

By the way I have no sledding knowledge so any helpful info would be much appreciated