To estimate the price of the 2016 Mazda CX-9 V6 3.7L High+ Premium (Top) with 99000 km mileage and average condition, I considered several data points. The most relevant selling prices include: a 2016 CX-9 V6 3.7L High+ Premium (Top) with 199900 km sold for 48000 SAR on 2023-10-28, and another with 247500 km sold for 39000 SAR on 2023-11-09. These cars had higher mileage but were in average condition. A 2015 model with 94000 km in average condition sold for 60000 SAR on 2023-12-05, and a 2015 model with 145600 km in average condition sold for 41500 SAR on 2024-09-12. Considering the mileage and condition of the target car, I adjusted the price downwards from the 2015 model with similar mileage but upwards from the higher mileage 2016 models. The listed prices for similar cars were 63000 SAR, 60000 SAR, and 57500 SAR, but these are typically higher than actual selling prices. Therefore, I estimated the market price by balancing these factors.