erotic art sales on the web - advice?

[thoreau]

I have a friend of mine who has inherited some pretty amazing drawings from an artist friend. He'd like to sell them - but these are some pretty intense BDSM related art drawings; and are 'precondom' in their themes and ideas. Does anyone know of an art website that might sell these sorts of drawings on consignment or - where one might go to set up an account to sell extremely intense adult drawings like these?