Hi everyone, I need to get some information about My MB fountain pen. I have to sell one MB lennon and another Mahatma Ghandi to buy another one fountain pen. Unfortunately the piston are broken on the both fountain pen... I've contacted MB services to get a price for the reparation but as it is a limited edition they cannot give me an estimation unless I send them the pens. So I'd like know how could it cost to repair its? Before all I need to know the estimation of the fountain pens, someone know how does it cost now or where is ti possible to get this information?