I analyzed the selling prices of similar cars first. The most relevant data points are: 2014 Ford Focus I4 1.6L, sedan, Mileage: 181000, sold for 26000 SAR on 2024-02-16 and 2024-02-22; 2014 Ford Focus I4 1.6L, sedan, Mileage: 169000, sold for 22000 SAR on 2024-03-11; and 2014 Ford Focus I4 1.6L, sedan, Mileage: 128000, sold for 22000 SAR on 2024-05-18. The car in question has a mileage of 135000 km, which is lower than most of the sold cars, suggesting a slightly higher value. The listed prices of similar cars range from 19500 to 26000 SAR, with the most relevant being 2014 Ford Focus I4 1.6L, sedan, Mileage: 135000, listed for 20000 SAR. Considering the selling prices and the listed prices, I estimate the market price to be slightly higher than the lower end of the sold prices due to the lower mileage.