To estimate the price of the 2018 GMC Yukon V8 5.3L XL SLE (Base+), I considered several data points. First, I looked at the selling prices of similar cars. The 2018 GMC Yukon SLT V8 5.3L with 205700 km sold for 120000 SAR in good condition. The 2018 GMC Yukon V8 5.3L with 192000 km sold for 100000 SAR in average condition. The 2017 GMC Yukon V8 5.3L SLE (Base) with 177000 km sold for 86000 SAR in average condition. The 2016 GMC Yukon V8 5.3L SLE (Base) with 269000 km sold for 60000 SAR in average condition. The 2019 GMC Yukon V8 5.3L SLE (Base) with 175000 km sold for 106000 SAR in good condition. The 2016 GMC Yukon V8 5.3L AT4 (Mid+) with 258000 km sold for 70000 SAR in average condition. Considering the car in question has higher mileage (274000 km) and is in average condition, I adjusted the price downwards. The listed price of a similar car was 99000 SAR, but listed prices are generally higher than selling prices. Based on these data points, I estimated the market price accordingly.