Car dealers

Moin, since I bought an old lady, my faithful Vectra, who accompanied me for 317,000 km, has to give way. So I advertised him on some internet platforms, e.g. Autoscout. The car is of course a found food for the flying dealers, the cars to the Orient, or the Eastern Block. Most of them I have hidden due to their price ideas. Now one of the supposedly largest car importers of Austria has registered. Curiously enough, they did not have Fir They even want to buy the car in advance and have it picked up by a freight forwarder. What should I think of such offers? Has anyone ever gained experience with such “importers”? Write me your opinion about it. Thank you Kai