To estimate the price of the 2021 Lexus LX570 V8 5.7L Platinum (Mid) with 128500 km mileage, I first considered the selling price of a similar 2020 model with 170000 km sold for AED 290000 in August 2023. Given the 2021 model is newer and has lower mileage, it should be valued higher. Next, I reviewed the listed prices of similar cars. The closest match is a 2021 Lexus LX570 V8 5.7L Platinum (Mid) with the same mileage listed for AED 358000. However, listed prices are generally higher than actual selling prices. Other listed prices for similar models range from AED 290000 to AED 409990, with lower mileage cars listed at higher prices. Considering the depreciation and the market trend, I adjusted the value down from the listed price to reflect a more realistic market price.