No, nothing fishy there, but if I could contact the previous owner, I might get better assessment of the condition of the car than by listening to the used car salesman's sales pitch.
An A2 with discreet A2-freun.de decals in both rear doors for sale in Nürnberg:
https://suchen.mobile.de/fahrzeuge/details.html?id=369787498
Does anyone recognise this as their former A2?