To estimate the price of the 2018 Lexus RX350 L V6 3.5L FF F-SPORT (Top) with 90000 km mileage, I considered the following data points: 1. A 2016 Lexus RX350 V6 3.5L with 275000 km, mid variant, sold for SAR 100000 in April 2024. Adjusting for the year and mileage difference, the 2018 model should be valued higher. 2. A 2018 Lexus RX350 L V6 3.5L FF F-SPORT (Top) with the same mileage is listed for SAR 148000. 3. A 2019 Lexus RX350 V6 3.5L FF F-SPORT (Top) with 89000 km was listed for SAR 187500 but delisted in June 2024. 4. A 2018 Lexus RX350 V6 3.5L FF F-SPORT (Top) with 180810 km is listed for SAR 120000. Considering the condition, mileage, and variant, I adjusted the price to reflect a realistic market value.