To estimate the price of the 2017 Ford Mustang V8 5.0L GT Convertible, I first considered the accepted offer for a similar 2017 Mustang GT Premium (Top) coupe with 61,000 km mileage, which was SAR 109,500. This car has a lower mileage and is a coupe, which typically has a different market value than a convertible. Next, I looked at the listed prices: SAR 130,000 for a 69,000 km coupe and SAR 119,000 for a 61,000 km coupe. These prices are higher than the accepted offer, indicating they might be listed above market value. The new 2025 Mustang GT Premium Convertible is priced at SAR 254,500. Applying a 10% annual depreciation over 7 years, the estimated value of a new 2017 model would be around SAR 127,000. Considering the higher mileage of 143,500 km and the fact that convertibles can have a premium over coupes, I adjusted the estimate downward from the new car depreciation value, but slightly above the accepted offer due to the convertible factor.