rscott,
Chris Jurney in Craig is a trip, but if the fur is good hge will take them on teh round. He will pay what he can, but never very much. I usually give him around 20 yotes a year and end getting one skinned and tanned for free ($70). He will better for cats, provided they are not to tore up. The best bet is to first find someone to give you an idea on how to grade fur. The biggest factor in ability to sell is quality, and there is a big difference between grades, just not real obvious to us nonfur guys.
If your hunting around Walden there are a couple boys who were doing fur as part of thier FFA projects, but that was 2 years ago. Not sure they are doing anymore.
Vail itself is so yuppy, probably not much close to you, but always check the colorado tappers assoc. you never know. As for me I take the good ones, sale them or give away, let the other lay and calculate how many back strap I gave future hunters.