To estimate the price of the 2022 BMW X7 xDrive 40i with 68000 km mileage, I considered several data points. First, a similar 2022 BMW X7 xDrive 50i with 6000 km sold for SAR 232700 on 2024-01-30. Given that the xDrive 50i is a higher variant, I adjusted for the variant difference using new car prices: the xDrive 50i is SAR 525000 and the xDrive 40i is SAR 473000, indicating a 10% higher price for the xDrive 50i. Adjusting the selling price of SAR 232700 down by 10% gives approximately SAR 209430. Next, I looked at listed prices for similar cars: SAR 337000, SAR 350000, and SAR 390000. These are higher than the selling price, likely due to negotiation margins. Considering the car's higher mileage (68000 km) compared to the sold car (6000 km), I applied a further depreciation. The average of the listed prices is SAR 359000, but adjusting for higher mileage and negotiation, I estimate the market price to be lower.