I think it should be the "BUYERS" responsibility to bring the vehicle thru customs.
Shipping, Taxes, Lic., Import duties.... ..... ... Buyers problem.
If he is not willing to come and get it, then He should hire an agent to arrange to deliver it.
Don't let a "potential" buyer, put you, "jumping through hoops".
Hold the hoop out for him, and say, "If you want it, it's here. Come and get it."


CASH!