Here are currently listed snowcats on KSL.com (No affiliation):
1994 Bombardier BR-400 ($24,900): http://www.ksl.com/?nid=218&ad=27671746&cat=146&lpid=0&search=&ad_cid=4
1990 LMC ($24,500): http://www.ksl.com/?nid=218&ad=27745291&cat=146&lpid=0&search=&ad_cid=5
1990 Tucker 1442B ($20,000): http://www.ksl.com/?nid=218&ad=27547951&cat=146&lpid=0&search=&ad_cid=6
Thiokol Spryte 1200 ($18,500): http://www.ksl.com/?nid=218&ad=27339421&cat=146&lpid=0&search=&ad_cid=8
1979 Custom Thiokol Spryte ($18,500): http://www.ksl.com/?nid=218&ad=27387157&cat=146&lpid=0&search=&ad_cid=9
Thiokol 601 ($18,500): http://www.ksl.com/?nid=218&ad=27810313&cat=146&lpid=0&search=&ad_cid=10
1974 Thiokol 1404 Imp ($15,000): http://www.ksl.com/?nid=218&ad=27607464&cat=146&lpid=1&search=&ad_cid=1
Thiokol Imp ($10,900): http://www.ksl.com/?nid=218&ad=27774895&cat=146&lpid=3&search=&ad_cid=5
1973 Thiokol 1200 ($10,500): http://www.ksl.com/?nid=218&ad=27597192&cat=146&lpid=3&search=&ad_cid=11
1994 Bombardier BR-400 ($24,900): http://www.ksl.com/?nid=218&ad=27671746&cat=146&lpid=0&search=&ad_cid=4
1990 LMC ($24,500): http://www.ksl.com/?nid=218&ad=27745291&cat=146&lpid=0&search=&ad_cid=5
1990 Tucker 1442B ($20,000): http://www.ksl.com/?nid=218&ad=27547951&cat=146&lpid=0&search=&ad_cid=6
Thiokol Spryte 1200 ($18,500): http://www.ksl.com/?nid=218&ad=27339421&cat=146&lpid=0&search=&ad_cid=8
1979 Custom Thiokol Spryte ($18,500): http://www.ksl.com/?nid=218&ad=27387157&cat=146&lpid=0&search=&ad_cid=9
Thiokol 601 ($18,500): http://www.ksl.com/?nid=218&ad=27810313&cat=146&lpid=0&search=&ad_cid=10
1974 Thiokol 1404 Imp ($15,000): http://www.ksl.com/?nid=218&ad=27607464&cat=146&lpid=1&search=&ad_cid=1
Thiokol Imp ($10,900): http://www.ksl.com/?nid=218&ad=27774895&cat=146&lpid=3&search=&ad_cid=5
1973 Thiokol 1200 ($10,500): http://www.ksl.com/?nid=218&ad=27597192&cat=146&lpid=3&search=&ad_cid=11