A4TSPORT
what's your budget?
are you after the full front, rear and sides or just the front?
given yours is a 2001, are the rest of the lowers colour coded yet? if not, bear in mind that when colour coding you have to prep the lower properly as the grey trim is not the same finsih as the newer "matt grey" finish that is painted on later models.
Martin's link is a pretty decent option to get the front coded: those parts are usually £300 (front upper), £90 (front lower), £100 (grills) and they still need painting...