To estimate the price of the 2018 BMW 730 Li I4 2.0L Twin Power Turbo with 190000 km mileage in average condition, I considered several data points. First, I looked at the selling prices of similar cars: a 2017 model with 80000 km sold for 130000 SAR, a 2016 model with 146000 km sold for 113000 SAR, a 2018 model with 92000 km sold for 138000 SAR, a 2020 model with 40000 km sold for 123500 SAR, and another 2018 model with 101000 km sold for 132000 SAR. Given the higher mileage and average condition of the target car, I adjusted the price downwards. I also considered listed prices: a 2018 model with 190000 km listed for 145000 SAR, a 2018 model with 150000 km listed for 130500 SAR, and a 2018 model with 147000 km listed for 132000 SAR. These listings are generally higher than actual selling prices. Based on these data points, I estimated the market price considering the higher mileage and average condition of the target car.