Volvo S60 -2.4 (140hp) Autogas BJ 2002 only 50,000km – What is it worth?

Hello all, I am currently looking for a larger (currently Fiesta 2005) vehicle for commuting. I have come across big Volvofan and by chance on the following cars: – Volvo S60 year 2002 – 53,000 km run (recognizable) – stands there like new – no signs of wear, interior leather smells like new – car gas approx. 2009 retrofitted (Prins for almost 2,800,- Euro from the professional) – allegedly 10 liters consumption on average, 8 liters on highway realistic? – New quality rims and tires (Winteralus in addition) – new grill and “Fake 2. Exhaust pipe”, whereby the aperture had to be slightly sawn in the back – retrofitted camera – stapled – judgment at the last TÜV “extraordinarily good condition” – vehicle stood in the garage in case of rain and was brought out especially only on holiday trips (Gardasee) – in the last years approx. 6.000 € were put into the car (including car gas, lack/tires etc.) color silver is not my favorite, however I have the feeling that the r S60 could accompany me (about 30,000km/year) with the good Volvo engine for a few more years. As price the gentleman had targeted 10,000 €. Is this realistic? If not, what could you pay for a vehicle in that condition? Originally had a C30 with the small diesel or Flexifuel LPG in the narrow selection. Thank you in advance for your help!