AUCTION cross INFORMATION with cruel madness

This is a simple auction game. The player who played the greatest power card wins the treasure of the round. However, the Victory Points of the treasure are only revealed to the dealer. Other players have to guess the Victory Points of said treasure based on what ammount of power the dealer wagers with.
Be careful! The winner's power card value becomes negative points as well - your mind shatters as you use power. Indeed, The Abyss whispers to YOU...
Winning is not only getting victory points, but also getting information. The winner becomes next dealer - allowing the winner to see both the value of the treasure won and the treasure of the next round.