It's entirely unclear, but taking a look at the spring auction previews, collectors prefer men to women at a ratio of more than 3 - to - 1. (artfcity.com)
I also held a real estate auction preview two weeks before the actual auction that lasted about 90 minutes. (realtormag.realtor.org)
Auction previews of work by Franco Mondini - Ruiz and other sneak -LSB-...] (art-nerd.com)