Wheel value BBS Polo GTI

Hello, since I have been helped in a similar way here, I ask a friend of mine to help. He has an original set of BBS rims 4×100 (6×15 ET45) of his Polo GTI’s, which he is considering selling. On 2 rims the clear varnish comes up, otherwise no damage (according to his statement). As tires 4 Dunlop Sport XYZ are mounted from the end of 2006 (still some profile). With what for a price could/should he apply? In the bay there are e.g. such rims, which are in a bad condition. d for over 400€. In another auction are more beautiful for 300€ and there seems to be nothing to do. The sale is not urgent!!! My colleague will be happy about your help. Greetings, Malle