Honestly, art buyers, why even show up to auctions if you're going to cowardly balk at multi-million dollar estimates? At last night's Christie's sale combining the 19th and 20th century art collections of Park Avenue widow Rita Hillman and property heiress Alice Lawrence, works by Manet, Cézanne, Renoir, Rothko, and de Kooning were left on the block, making an overall tally of $47 million, not even close to the presale estimate of $103 to $150 million.