Agostino Santagostino ( 1640 - 1706 ) was an Italian painter. Agostino Santagostino s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 24000 USD for Polyphemus and Galatea in 2005 to 64575.39 USD for La giustizia in 2006 , based on the size and medium of the artwork.