To estimate the price of the 2015 Mazda CX-9 V6 3.7L High+ (Mid) with 320,000 km mileage and average condition, I considered the following data points: 1. A 2015 Mazda CX-9 V6 3.7L High+ Premium (Top) with 283,000 km sold for 41,000 SAR on 2024-01-17. 2. A 2015 Mazda CX-9 V6 3.7L High+ (Mid) with 212,000 km sold for 45,500 SAR on 2024-03-05. 3. A 2015 Mazda CX-9 V6 3.7L High+ Premium (Top) with 243,000 km sold for 46,000 SAR on 2023-12-03. 4. A 2015 Mazda CX-9 V6 3.7L High+ (Mid) with 320,000 km listed for 41,000 SAR but not delisted. 5. A 2015 Mazda CX-9 V6 3.7L High+ (Mid) with 316,000 km listed for 29,000 SAR and delisted on 2024-08-05. Considering the higher mileage and average condition, I adjusted the price downwards from the selling prices of similar cars with lower mileage.