Volvo S40 II hard to sell ??

Hello to the Volvo Forum, I have been driving a Volvo S40 II, Built 09/2005, Kinetic, 2.4 ltr., Automatic, TÜV 05.2016 The vehicle has currently run 98,000 km and is maintained checkbook (at Volvo). Had as repairs last year a new battery, new timing belts, new cathedral bearings, new springs front and new summer tires. I even had a seat heater (driver’s seat) retrofitted. It is in a well-kept condition without bumps and scratches. Why do I post this here? Since the Volvo was only intended as a transitional vehicle for a year, I wanted to pay it now for a new car purchase. However, the dealers in question were anything but enthusiastic and offered only as a purchase price of 3,500 euros. And that, although a current Schwack report as a dealer selling price of 4,700 euros showed. The dealer selling price was not according to Schwacke at 6,200 euros. As a reason, there were arguments like: – too few vehicles on the market !!!? – can be sold hard again I thought II was so popular with a purchase of Volvo?