To estimate the price of the 2016 GMC Yukon SLT V8 5.3L SLT (Mid) in average condition, I considered the selling prices of similar cars. A 2016 Yukon AT4 (Mid+) with higher mileage sold for 70000 SAR, and a 2016 SLE (Base) with similar mileage sold for 60000 SAR. The SLT variant is typically priced higher than the SLE but lower than the AT4. A 2018 SLT in good condition sold for 100000 SAR, indicating a higher value for newer models. Considering the target car's average condition and mileage, I estimate its price to be slightly higher than the 2016 SLE but lower than the 2016 AT4, around 65000 SAR.