To estimate the price of the 2020 GAC GS8 I4 2.0L Turbocharged GT 4WD (Top) with 142,000 km mileage, I analyzed the selling prices of similar cars. A similar car with 120,000 km sold for 63,500 SAR in November 2023, and another with 125,000 km sold for 54,000 SAR in June 2024. A car with 136,000 km sold for 45,000 SAR in August 2024. Considering the target car's higher mileage and good condition, its value should be slightly lower than the 54,000 SAR car but higher than the 45,000 SAR car. The listed price of a similar car with 136,000 km was 45,000 SAR, which aligns with the selling price. Therefore, I estimate the market price to be slightly above 45,000 SAR, considering the condition and mileage.