Given the lack of actual selling prices, offers accepted, and listed prices of similar used cars, I relied on the new car prices and applied depreciation logic. The new 2024 Nissan 370z Standard Convertible is priced at SAR 176,000. Assuming a depreciation rate of 10% per year, the car would depreciate by 20% over two years, resulting in a value of SAR 140,800. However, considering the high mileage of 150,000 miles, which is significantly above average, I applied an additional depreciation factor. Typically, high mileage can reduce the car's value by an additional 20-30%. Applying a 25% reduction for high mileage, the estimated price is SAR 105,600.