Over here (Netherlands) the best 50mm enlarging lenses (Nikon, Schneider, Rodenstock etc. also Apo versions and F/2.8) in excellent condition are sold for some 30 - 80 Euros. A Leitz Focotar 2 will be more costly, up to some 200 euros. Nobody over here will pay more than that for any enlarging lens. And nobody will even consider buying a new lens from a manufacturer... why would you?