Request for a purchase advice with a Volvo V50

Hello dear Volvo municipality I drive a 850 station wagon for 15 years am very satisfied with the cars, but He comes into the years, the Katt clatters the cooling starts out. To Tüv he also has to. I consider whether we should get a V50, because only very little is still driven. At Auto Scout 24 I found a V50 unfortunately, I am not an expert and do not know what I have to pay attention to when buying.http://www.autoscout24.de/Details.aspx?id=215905719 The car could be. My question is, is the car with the mileage and with the equipment for the price of 8490,00€ in localization or much too expensive. What must I pay attention to when buying what flaws the car has. With friendly greetings Leolpoldine