Where a car is sold has a direct effect on its price. The "buy on Craigslist, sell at auction" maxim has been used by traders for years, and an examination of average price across channels for a 1965 Ford Mustang confirms this hierarchy. Interestingly, though, the gap between auction prices and listing prices has tightened dramatically over the past 24 months, with FSBO prices now nearly two-thirds what auction prices are. This figure was just 25% in 2013.
This is a companion discussion topic for the original entry at https://www.hagerty.com/articles-videos/articles/2015/06/26/graph-of-the-week-1965-ford-mustang-values-by-venue