To estimate the price of the 2014 Infiniti QX60 V6 3.5L Luxe Sensory (Top) with 254000 km mileage, I first considered the selling price of a similar 2015 model with 115000 km sold for 64500 SAR in October 2023. Given the higher mileage and older model year of the target car, a significant depreciation is expected. Next, I reviewed listed prices of similar 2014 models: 34000 SAR (254000 km), 41000 SAR (213000 km), 45500 SAR (212000 km), 41500 SAR (300000 km), and 47000 SAR (199000 km). The average of these listings is approximately 41800 SAR. Considering the target car's higher mileage and average condition, I adjusted the estimate slightly lower than the average listed prices.