To estimate the price of the 2018 Mercedes GLC250 I4 2.0L Turbo Charged with 64000 km mileage in average condition, I first considered the selling price of a similar car with 90000 km mileage in good condition, which sold for SAR 153000 on 2023-09-10. Given the lower mileage and average condition of the target car, I adjusted the price downwards. Next, I looked at the listed prices of similar cars. A 2018 model with the same mileage was listed for SAR 143000, and a 2017 model with 84200 km was listed for SAR 132000. Considering the average condition and the fact that listed prices are generally higher than selling prices, I estimated the market price to be slightly lower than the listed price of the 2018 model with the same mileage.