Despite withdrawal by Britain, F-35B costs would increase Posted on November 20, 2010 by alert5 The U.S. Marine Corps believes the cost of the F-35B will not increase after Britain opts out of the jet. Related posts (Automatically Generated): USMC fighters could be flying off U.K.’s new carriers VMA-223 pilots return from 24th MEU USMC seeks UAV killer LM will assume more risk on F-35 USMC moving large fleet of V-22, AH-1Z and UH-1Y to Hawaii Refueling hose from C-130 falls on house in San Diego