For many the F3 was historically insignificant. Not as phamous or charismatic as the F4 and ever the bridesmaid, through lack of investment, when asked to deploy on ops. No fault of the jet or the crews who did all that was asked of them, including years of Q.
Harrier, on the other hand, has fame and charisma by the bucketload and, arguably, could eke out a living (ish...) like the talismanic Vulcan if a return to flight was feasible. Like the Vulcan, the Harrier transcends aviation and is buried into the national psyche.
Market value I'd say....