Given the lack of specific data points such as selling prices, offers accepted, and listed prices, I will use the new car price and apply depreciation logic. Assuming a new 2017 Mercedes S320 V6 3.0L Standard had an approximate price of 400,000 SAR, and considering a depreciation rate of 10% per year, the car would depreciate by 40,000 SAR each year. Over 7 years (2017 to 2024), the total depreciation would be 280,000 SAR. Therefore, the estimated price would be 400,000 SAR - 280,000 SAR = 120,000 SAR.