Going once! Going twice! Sold? Not so fast, buddy. Although the MassArt auction is this Saturday evening, Paul and Wes Karger, co-founders of Twin Focus Capital and premier sponsors of the MassArt auction (and Boldfacers, incidentally), teased the big gavel event at an exclusive preview party and dinner. MassArt president Dawn Barrett (spearheading a $140 million capital campaign), Artists, corporate behomeths and art fans alike lit up the night, which kicked off with a reception at MassArt and ending with a five-star dinner at Stella's in the South End. We're sold.