Hi ! ,
Just remember that for all means , GO with your Buyer to the Douanne Office , and HAVE YOUR VEHICLE DETAILS REMOVED FROM YOUR PASSPORT . That - in 1998 - costed us 2000 FF (about 300 Eur) .It deppends on your bargainining abilities to decide who pays' for that .
OBviously , the Buyer will tell ya "Its no longer needed " , "Cheaper if I go alone" , "you can fix it at the boder" .
No way !.The only way you can exit the country is by having your vehicle details "removed" from your passport IN THE DOUANNE OFFICE , by the DOUANNE OFFICER , in presence of both YOU , THE BUYER , and THE MONEY .
Having said that , you won't find any difficulty in finding - what appear to be buyers for your vehicle - but is just and endless chain of comission seekers. Also Dont let anyone test-drive your car without showing the cash before . Some of them just want a free ride/drive.