And auction houses seem ready to make the break from those fusty old Marxist art historians and instead follow the lead of the prescient remark, made by Sotheby???s Tobias Meyer in 2006, ???The best art is the most expensive because the market is so smart.??? The market, fuelled by the money of ???sportsmen, actors, musicians and entrepreneurs??? (as well as that of oligarchs, sheikhs and hedge-fu