"Banning the trade in horn has made the horn more and more and more valuable. Had we never banned it, the price of horn would never have got to where it is now," John Hume, a rhino breeder in South Africa, told The Associated Press...."
http://www.npr.org/sections/thetwo-way/2017/03/13/519992083/south-africa-is-considering-legalizing-domestic-rhino-horn-trade?utm_medium=RSS&utm_campaign=world