To estimate the price of the 2018 Ford Focus Ecoboost I4 1.5L Standard with 155,000 km mileage, I first considered the selling prices of similar cars. A 2018 model with 200,000 km sold for 26,500 SAR on 9 May 2024, and another 2018 model with 67,000 km sold for 37,500 SAR on 25 Oct 2024. A 2017 model with 165,102 km sold for 22,000 SAR on 16 Sep 2024. These prices suggest a range for 2018 models between 26,500 SAR and 37,500 SAR, with mileage affecting the price. The car in question has 155,000 km, which is less than the 200,000 km car but more than the 67,000 km car. Considering the mileage and the average condition, the price should be closer to the lower end of the range. I also looked at listed prices, where a similar 2018 model with 67,000 km was listed for 37,000 SAR, but listings are generally higher than selling prices. Therefore, I estimate the market price to be slightly above the 26,500 SAR sold price for the higher mileage car, but below the 37,500 SAR for the lower mileage car.