To estimate the price of the 2021 Chevrolet Captiva Turbo Charged I4 1.5L LT FWD (Base) with 82000 km mileage and average condition, I analyzed the selling prices of similar cars. The most relevant data points are: a similar car with 117797 km sold for 43000 SAR on 2024-02-26, and another with 88152 km sold for 42000 SAR on 2024-09-28. A car with 85000 km sold for 41500 SAR on 2024-10-02. These cars are in average condition and have similar mileage. Considering the target car's mileage of 82000 km and average condition, the price should be slightly higher than 41500 SAR but lower than 43000 SAR. Therefore, I estimate the market price to be around 42000 SAR.