To estimate the price of the 2015 Ford Ranger I4 2.5L XLT Double Cab (XLT) Hi-Rider 4X4 M/T (Top) with 321000 km mileage, I considered the listed prices of similar cars. The closest match is a 2015 Ford Ranger I4 2.5L, Variant: Double Cab (XLT) Hi-Rider 4X4 M/T (Top) with 127000 km listed for SAR 41000. Adjusting for the higher mileage of the target car, I applied a depreciation factor. Another similar car, a 2015 Ford Ranger XLT I4 2.5L with 231000 km is listed for SAR 34000. Considering the higher mileage of the target car, I estimated a further depreciation. The 2013 Ford Ranger I4 2.5L with 344000 km is listed for SAR 21000, which provides a lower bound. Based on these data points, I estimated the market price by averaging and adjusting for mileage and condition.