my mate went on gum tree for a camper van phoned the guy all seemed good looked like it was paypal linked sent emails vice versa it went on he sent the 3500 by bacs g been done by online fraud these guys bounced there servers of paypal link they have done threehundred thou in two weeks so be warned
never ever click a link in an email from PayPal that asks for anything same with banks if anything that has personal details involved they never ever ask you for it.
This type of fraud has been going on for years i am shocked yet not surprised people still fall for it. Looking at link location is easy way to see it is not from who it's meant to be, reporting it also helps close these scammers down quicker.
I Feel sorry for this guy he's paid a high price to learn this lesson. And unless he's paid via credit card is unlikely to get any money back