To estimate the price of the 2023 GMC Sierra AT4 V8 5.3L V8 AT4 Crew Cab (AWD) (Mid++), I considered the following data points: 1. The new car price for the 2025 GMC Sierra 5.3L V8 AT4 Crew Cab (AWD) is SAR 255760. Applying a 10% depreciation per year, the estimated value for a 2023 model would be approximately SAR 231000. 2. The listed prices of similar cars: a 2023 model with 7100 km was listed for SAR 257000, a 2022 model with 9000 km was listed for SAR 184000, a 2022 model with 19000 km was listed for SAR 233000, and a 2021 model with 59200 km was listed for SAR 154000. Considering the mileage and condition, the 2023 model listed for SAR 257000 is the closest match. 3. Given the new car price depreciation and the listed prices, I estimate the market price to be slightly lower than the highest listed price due to negotiation and market conditions.