Audi RS6 RS6 Quattro 4dr Tip Auto 4.2 2003

Looking to buy this one but not 100% due to the price. It has 6 Audi stamps and 4 Independent stamps (last one was at Saab) Apparently it is in very good condition.

I asked about suspension and he said if you drive along a very bumpy/harsh road there is a little knocking from the front but apart from that it drives faultlessly.

Views on this please?

Thanks