Ben Vautier ( 1935 - ) is an Italian painter. Ben Vautier s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 4766.21 USD for Il y a un rat dans un des cinq tiroirs in 2004 to 18867.92 USD for Et le bonheur ? in 2015 , based on the size and medium of the artwork.