actually there are plenty of places to stay that are affordable but you'd have to drive to the ski area since they are down-valley (15 minutes or so)
..
to stay in Snowmass means you have to pay a bit more.
so... define cheap

I can have some info for you if you're serious.
compared to front range skiing (breckenride, vail, keystone, winter park, etc) Snowmass/Aspen has them beat hands down.
the best snow, never a wait in the lift line.. ok.. maybe at the bottom /beginner area but it's pretty damned short
I can't tell you the number of times I've been skiing and it felt like my private resort.. NO lines, and hardly anyone on the hill
gotta love it
as for terrain, we have 4 peaks and you could ski a different run every run all day and never get closed to skiing it all.
then there's back-country/steeps
