To estimate the price of the 2016 Mercedes GLS63 AMG V8 5.5L BiTurbo Standard with 84907 km mileage, I first considered the selling price of a similar car with 80000 km mileage sold for SAR 200000 on 2023-12-18. Given the similar specs and slightly higher mileage, I adjusted the price slightly downwards. I also looked at the listed price of a similar car with 80000 km mileage listed for SAR 215000, which is generally higher than the actual selling price. Another listed car, a 2015 model with higher mileage (114000 km), was listed for SAR 165000. Considering the condition and mileage differences, I estimated the market price by balancing these data points.