Offered to buy the bloke H15LTR for his 500 Griff from the DVLA web site - only £250 - but he didn't want it. Not sure if it is still available - but it has to be a steal at that price.
Theres so many permatations(sp?) griff, 500 and tvr in the plate that u should be able to get one for £250 + the extras they put on, normally comes to nearer £400. I'd offer him £250 for that one.