I'm selling my XR2 on saturday.

Unfortunately, the lad who had the car before me only gave me the green slip as he had "sent off for changes". However, being a gripey fooker and not wanting to lash out £19 on a bit of paper which i wudnt have for long, i never got a logbook.

What can i give the guy I am selling it to apart from a £20 discount for the logbook, a receipt and a photocopy of my lisence???