I started by looking at the selling prices of similar cars. The first car, sold on 2023-09-24, had a selling price of 112000 SAR with a mileage of 9200 km and in good condition. The second car, sold on 2024-03-11, had a selling price of 99500 SAR with a mileage of 18000 km. The third car, sold on 2023-07-30, had a selling price of 108000 SAR with a mileage of 7180 km and in good condition. The car to be estimated has a mileage of 18000 km and is in average condition. Considering the condition and mileage, I gave more weight to the second car's selling price of 99500 SAR. I also looked at the listed prices of similar cars, which ranged from 101000 SAR to 115000 SAR, but these are generally higher than actual selling prices. Therefore, I estimated the market price to be slightly lower than the second car's selling price due to the average condition of the car in question.