Westsails boats come up for sale on a regular basis.
YachtWorld's web site list of Westsail boats for sale by many yacht brokers.
Sailboatlistings.com - search for Westsail
Sailboats webtrader - sailboats.webtrader.co
Bud Taplin of Westsail Parts Company (aka Worldcruiser Yacht Co.) of Newport Beach, California specializes in all things Westsail including advice on his forum and a wide range of custom manufactured Westsail parts.
Please see the Westsail Parts Company web site for Westsail boats for Sale.
Paula Taplin (1943 - 2013) wrote the following article about the "New Owner" experience in Pacific Skipper Magazine, April, 1978.