To estimate the price of the 2015 Mazda CX-9 V6 3.7L High+ Premium (Top) with 253,000 km mileage, I first considered the selling prices of similar cars. A similar car with 283,000 km and average condition sold for SAR 41,000 in January 2024. Another similar car with 212,000 km and average condition sold for SAR 45,500 in March 2024. The car with 243,000 km and good condition sold for SAR 46,000 in December 2023. The car with 248,000 km and good condition sold for SAR 47,000 in May 2024. The target car has 253,000 km and is in average condition, so its price should be closer to the SAR 41,000 sale. I also looked at listed prices: one similar car with 255,000 km is listed for SAR 40,000, and another with 292,000 km is listed for SAR 41,500. Considering these data points, the estimated market price is around SAR 41,000.