The most relevant data point is the selling price of a similar 2015 Mercedes GL500 V8 4.6L with 96000 km mileage, sold for SAR 135000 in December 2023. The car to be estimated has a slightly higher mileage of 108500 km and is in average condition, which suggests a lower price. The listed prices for similar cars range from SAR 95000 to SAR 145000, with the most comparable being SAR 103500 and SAR 95000, both delisted in August 2024. Considering the average condition and higher mileage, the estimated price should be closer to the lower end of the listed prices.