Purchase advice to Seat Arona BJ.2018

Hello, I need a new car, which is relatively spacious, has space for holiday items for 2 people and is also suitable for long distances with trailer operation (approx. 1000km a track). Visually it should also make something here. In the eye of me the Seat Arona 1.5 TSI 150 hp. Since this is advertised rather as a city car, many of the used ones have no AHK, which is however indispensable. A retrofit would be expensive here. I now have the following offer of a private property he found for 17,000€: – Seat Arona 1.5 TSI 150 hp with FR equipment – BJ. 2018 – under 30,000km – Full-Led, Alcantara seats, seat heating, cruise control, parking sensors front and rear with parking steering assistant, dead angle assistant, Beats audio etc. – factory-side AHK (!) – 18 inch rims, slightly lowered (liked quite well) – seems to be otherwise also externally and inside very well maintained How do you find the price? Considering that the car is 6 years old and as a new car with the equipment At that time it cost approx. 27,000€ (without a dealer discount included), is the price nevertheless reasonable because of the low mileage? Merchant guarantee I also do not have because of private. Thank you in advance! Duc