To estimate the price of the 2020 Chevrolet Silverado V8 5.3L High Country (Top+), I considered the listed prices of similar cars. The closest match is a 2020 Chevrolet Silverado V8 5.3L High Country (Top+) with the same mileage listed for SAR 129500. Other relevant data points include a 2021 Silverado LTZ (Top) listed for SAR 139000 and a 2019 Silverado High Country (Top+) with higher mileage listed for SAR 164000. Given the similar specs and mileage, the 2020 model's price should be slightly lower than the 2021 LTZ and significantly lower than the 2019 High Country due to the mileage difference. Factoring in these comparisons, the estimated market price is derived.