I know that from last time the selling prices for some of the items were posted online. The lowest priced item I remember from last time was a dress that went for $900. The Peter Pan ride vehicle went for $35,000. A few of the items didn't sell, because they didn't hit the reserve price. The surprise items last time were primarily the paintings made live on stage that night by the really talented artist. (Sorry, don't remember his name.)
I'm not sure if I'll hang around for the auction this time or not. It was a fun show and a good time, but I may have a serious case of Expo Burnout by that point.