Unless your very nice Avant is bought by a lottery winner, you've no chance of getting your asking price, I'm afraid and I'm sure we'd all agree on that. I'm not being mean, but realistic. I bought my S6 recently with a full Audi Service History and only 82,000 miles on it for a lot less..
And as for that blue Nogaro saloon's asking price - he is just wasting everyone's time . .
