To estimate the price of the 2023 Changan UNI-T I4 1.5L Turbocharged SVP (Top) with 49500 km mileage, I first considered the selling price of a similar car with 17300 km mileage sold for SAR 71500 on 2023-12-16. Given the higher mileage of the target car, I adjusted the price downwards. Next, I looked at listed prices of similar cars: one with 62000 km listed for SAR 66500, another with 65766 km listed for SAR 68000, and another with 29738 km listed for SAR 70000. These listings suggest a price range between SAR 66500 and SAR 70000 for cars with higher mileage. Considering the target car's mileage and condition, I estimated the price to be slightly lower than the average of these listings.