To estimate the price of the 2021 Isuzu D-Max I4 3.0L Turbocharged (Diesel) Double Cab with 109000 km mileage, I first considered the selling price of a similar 2020 Isuzu D-Max I4 1.9L (Diesel) Double Cab with 246000 km mileage, which sold for SAR 55700 on 2024-01-31. Given the higher engine size and lower mileage of the target car, it should be valued higher. Next, I looked at the listed prices of similar cars: a 2021 Isuzu D-Max I4 3.0L Turbocharged Double Cab with the same mileage listed for SAR 88000, and a 2019 model with 90500 km listed for SAR 81000. Considering the depreciation and the fact that listed prices are generally higher than selling prices, I adjusted the estimate downwards. The 2022 model with 23100 km listed for SAR 115000 also suggests a higher value for newer models. Factoring in these data points, I arrived at a reasonable market price estimate.