Humphrey Repton ( 1752 - 1818 ) was a British painter. Humphrey Repton s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 3400 USD for Designs for the Pavillon at Brig in 2004 to 5116.83 USD for OBSERVATIONS ON THE THEORY AND PRACTICE OF LANDSCAPE GARDENING in 2005 , based on the size and medium of the artwork.