I analyzed the selling prices of similar 2018 Mercedes GLA250 cars. The most relevant data point is a car with similar specs and mileage (79600 km) sold for 85000 SAR in early 2024. Another similar car with lower mileage (54500 km) and in good condition sold for 92500 SAR in mid-2023. A 2017 model with similar mileage (70000 km) and good condition sold for 83000 SAR in April 2024. Considering the target car's mileage (68000 km) and good condition, it should be valued slightly higher than the 85000 SAR car but lower than the 92500 SAR car. The listed prices support this range, with a 2017 model listed for 90000 SAR. Therefore, I estimate the market price to be around 88000 SAR.