Back in the mid Noughties, I brokered a sale of sale of a Mk1 Custom that belonged to a musician acquaintance to a guy in Amsterdam. The price? £2200. I took the bass to Amsterdam and the guy couldn't believe his luck in getting a pristine model, with original case. The musician couldn't believe getting £2k for it, given that he'd bought it for £500 back in the late '80s.