To estimate the price of the 2015 BMW 528 I4 2.0L Twin Power Turbo Standard with 198,000 km mileage, I first considered the selling prices of similar cars. A 2015 model with 91,000 km sold for 65,000 SAR in April 2024. Given the higher mileage of the target car, its value would be lower. A 2013 model with 213,000 km sold for 22,000 SAR in June 2024, which provides a lower bound for older models with high mileage. The listed price for a 2015 model with 153,000 km is 59,500 SAR, but listed prices are typically higher than selling prices. Considering the mileage and condition, the target car's price should be between the 2013 and 2015 sold prices, closer to the lower end due to its high mileage. Thus, I estimate the market price to be around 45,000 SAR.