To estimate the price of the 2019 Mazda CX-9 I4 2.5L High+ Premium (Top) with 98000 km mileage, I considered several data points. The most relevant selling prices include: 2019 Mazda CX-9 I4 2.5L Turbocharged, 88000 km, Grade 1 Premium (Mid+), sold for 77000 SAR on 2024-07-06 and 2024-07-07; 2019 Mazda CX-9 I4 2.5L Turbocharged, 71000 km, Grade 1 Premium (Mid+), sold for 72300 SAR on 2023-12-17; and 2019 Mazda CX-9 I4 2.5L Turbocharged, 120000 km, High+ (Mid), sold for 67000 SAR on 2023-08-18. The closest match in terms of variant and condition is the 2020 Mazda CX-9 I4 2.5L Turbocharged, 93000 km, High+ Premium (Top), sold for 110000 SAR on 2024-04-23. Considering the mileage and condition of the target car, I adjusted the price slightly lower than the 2020 model but higher than the mid variants. The listed prices of similar cars were 103500 SAR and 119000 SAR, which are generally higher than actual selling prices.