I started by looking at the selling prices of similar cars. The first car, with a mileage of 121000 km and in good condition, sold for 46000 SAR on 2023-12-05. The second car, with a mileage of 137000 km and in average condition, sold for 45000 SAR on 2024-06-06. The third car, with a mileage of 125000 km and in average condition, sold for 44500 SAR on 2024-06-11. The car to be estimated has a lower mileage of 91183 km and is in average condition. Given the lower mileage, it should be valued slightly higher than the second and third cars but lower than the first car due to its average condition. I also considered the listed prices, which range from 50500 SAR to 59500 SAR, but these are generally higher than actual selling prices. Therefore, I estimated the market price based on the selling prices, adjusting for the lower mileage and average condition.