To estimate the price of the 2013 Mazda CX-9 V6 3.7L High+ Premium (Top) with 309500 km mileage, I considered the following data points: 1) A 2013 Mazda CX-9 with 213000 km sold for 35000 SAR on 2024-07-25. Given the higher mileage of the target car, its value would be lower. 2) A 2014 model with 256000 km sold for 35000 SAR on 2024-04-18, and another 2014 model with 196000 km sold for 35500 SAR on 2024-01-28. Both have lower mileage and are newer, suggesting a lower value for the target car. 3) A 2015 model with 343000 km sold for 32000 SAR on 2024-09-14, which is newer but has higher mileage, indicating a similar or slightly lower value for the target car. 4) Classified listings for 2013 models with similar mileage range from 30000 to 45000 SAR, but these are typically higher than actual selling prices. Considering these factors, the estimated market price is adjusted accordingly.