Well, first you can either have an inspection company check out the vehicle for you, or someone here may know a person in Florida familiar with VWs ( Ie OCOD member) who could check it out for you.
As far as payment, you make deposit only via PayPal or certified funds, and then have that trusted person make the balance payment at purchase, and await transport company to pick up vehicle then.
The seller has been a member since 2009, has no feedback (negative or positive) on his sales ads, and states his occupation as "security."
Not sure if this is what you were looking for. We've bought a lot of cars out of state, sight unseen, and so far (*knock wood*) haven't had any problems.