To estimate the price of the 2020 Mazda CX-9 I4 2.5L Turbocharged High+ Premium (Top) with 137000 km mileage and average condition, I considered the following data points: 1. Selling prices of similar cars: - A similar car with 89200 km mileage sold for 190500 SAR on 2023-12-22. - Another with 161000 km mileage sold for 74000 SAR on 2024-01-05. - A similar car with 93000 km mileage sold for 110000 SAR on 2024-04-23. - Another with 146000 km mileage sold for 89000 SAR on 2024-04-30. 2. Listed prices of similar cars: - A car with 137000 km listed for 96000 SAR. - Another with 146000 km listed for 103500 SAR. - A car with 123000 km listed for 103000 SAR. - Another with 115000 km listed for 115000 SAR. - A car with 110000 km listed for 95500 SAR. - Another with 103454 km listed for 118000 SAR. - A car with 174027 km listed for 101500 SAR. Considering the selling prices, the car with 146000 km sold for 89000 SAR is the closest match. The listed prices range from 95500 to 118000 SAR. Given the car's mileage and condition, I estimate the market price to be slightly lower than the average of these values.