I analyzed the selling prices of similar cars, focusing on those with the same variant and condition as the target car. The most relevant data point is the 2023 Changan CS35 Plus GDI Smart (Mid) with 13000 km sold for 56500 SAR on 2023-12-24. Another similar car with 6476 km sold for 53000 SAR on 2024-07-29, but it was in good condition. Considering the target car's higher mileage of 19953 km and average condition, I adjusted the price slightly lower than 56500 SAR. The other data points were for different variants or conditions, so they were less relevant.