To estimate the price of the 2016 Ford Expedition V6 3.5L EL XLT (Base+), I first looked at the selling prices of similar cars. The most relevant data point is a 2016 Ford Expedition V6 3.5L Turbocharged EcoBoost with 93000 km, sold for 61000 SAR on 2024-03-17. Given that the target car has higher mileage (128000 km) and is in average condition, I adjusted the price downwards. Another relevant data point is a 2016 Ford Expedition V6 3.5L with 190000 km, sold for 45000 SAR on 2024-02-19. Considering the target car has lower mileage and is in average condition, I adjusted the price upwards. The listed price of a similar car with the same mileage and specs is 54500 SAR, which is generally higher than the actual selling prices. Taking all these factors into account, I estimated the market price accordingly.