To estimate the price of the 2020 Ford Edge ST (Top+), I started by looking at the new car price for a 2024 Ford Edge 2.0T Trend AWD, which is SAR 129835. Given that the car in question is a 2020 model, I applied a 10% depreciation per year over 4 years. This results in a depreciation of approximately 40%, bringing the estimated value to around SAR 77801. Next, I considered the listed prices of similar cars: a 2020 Ford Edge I4 2.0L Ambiente (Base) with 76000 km listed for SAR 70000 and a 2018 Ford Edge V6 3.5L Trend (Mid) with 55000 km listed for SAR 79000. Given that the car in question is a higher trim (ST) and has higher mileage (100000 km), I adjusted the price upwards from the base model but slightly lower than the mid-trim due to the higher mileage. Combining these factors, I arrived at an estimated market price.