To estimate the price of the 2017 GMC Yukon XL Denali V8 6.2L XL Denali (Top+), I considered the following data points: 1) A 2019 GMC Yukon Denali V8 6.2L with 74000 km sold for 170000 SAR on 2023-12-31. Adjusting for the older model year and higher mileage, I estimate a depreciation of around 10% per year and additional depreciation for mileage. 2) A 2017 GMC Yukon V8 5.3L SLE (Base) with 177000 km sold for 86000 SAR on 2024-07-23. Considering the higher trim and better condition of the target car, I adjusted the price upwards. 3) A 2018 GMC Yukon SLT V8 5.3L with 205700 km sold for 120000 SAR on 2023-10-12. Adjusting for the higher trim and lower mileage of the target car, I increased the price. 4) The listed price of a similar 2017 GMC Yukon XL Denali V8 6.2L with the same mileage is 133000 SAR. Considering that listed prices are generally higher than selling prices, I adjusted the estimate downwards. Combining these data points, I arrived at the final estimate.