Artelligence Podcast: Judd Tully on Armory Week March 11, 2015 by Marion Maneker More from Art Market MonitorChristie’s 2015 Sales = £4.8bn ($7.4bn); Down 5% from 2014; Private Sales Biggest DropAndreas Gursky Needs a BreakGallery Middle Class Retrenches in ChelseaEdelman Claims a WinCurrency Affects Aboriginal SaleMartin Gayford Believes in Global Art