To estimate the price of the 2023 Lexus GX460 V8 4.6L Sport (Top) with 6000 km mileage, I used the new car prices as the primary reference. The 2025 Lexus GX460 Sport (Top) SUV is priced at SAR 301000. Given that the car in question is a 2023 model, I applied a 10% depreciation per year. Since the car is one year old, the depreciation would be 10% of SAR 301000, which is SAR 30100. Subtracting this from the new car price, the estimated price is SAR 270900. Considering the low mileage and good condition, I did not apply any further depreciation.