To estimate the price of the 2023 Lexus RX500h 2.4L F SPORT PERFORMANCE F-Sport (Top) with 19020 km mileage, I first considered the selling price of a similar car sold by a dealer on 2024-09-17 for AED 254787.5. This car had a slightly higher mileage of 23051 km. Given that the car in question has lower mileage, it would typically be valued slightly higher. However, considering the average condition of the car, I would not increase the price significantly. The listed price of a similar car with the same variant and mileage is AED 299750, but listed prices are generally higher than actual selling prices. Therefore, I used the dealer's selling price as the primary reference and adjusted slightly for the lower mileage and average condition.