I was given a Bronica GS system to sell for a friend of another member. The camera comes with, metered finder, speed grip, backs and 4 lenses. The lenses are 100mm, 150mm 65mm and the 250mm. I have been able to find prices on all items but the 250mm. Can anyone give me some ball park figures on the lens? The glass, barrel, everything is in near mint or mint condition. The lens comes with both caps including metal screw on front cap. Any help would be appreciated.