To estimate the price of the 2018 Mercedes S450 V6 3.0L Top with 112,000 km mileage, I first considered the selling prices of similar cars. The closest match is a 2018 S450 with 58,000 km sold for SAR 226,000 and SAR 215,000 in early 2024. These cars are in good condition and have lower mileage, suggesting a higher value than the target car. Next, I looked at listed prices for similar cars. A 2018 S450 Top with 95,000 km was listed for SAR 220,000, and another with 160,400 km was listed for SAR 210,000. These listings suggest a market range for the Top variant. Considering the target car's average condition and higher mileage, its value would be lower than these listings. Factoring in depreciation and the condition, I adjusted the estimate downward from the lower end of the listed prices.