To estimate the price of the 2020 BMW 730 I4 2.0L Twin Power Turbo Li (Top) with 78000 km mileage, I first considered the selling price of a similar car with 40000 km mileage sold for SAR 123500 on 2024-06-06. Given the higher mileage of the target car, its value would be lower. Next, I reviewed listed prices of similar cars: SAR 235000 (78000 km), SAR 207000 (70000 km), SAR 227000 (88000 km), SAR 212000 (68000 km), SAR 207500 (67000 km), SAR 220000 (91000 km), SAR 220000 (64000 km), and SAR 194000 (63000 km). These listed prices are generally higher than actual selling prices. Considering the selling price and adjusting for mileage and condition, I estimated the market price to be lower than the listed prices but higher than the selling price of the lower mileage car.