To estimate the price of the 2023 Changan UNI-K I4 2.0L Turbocharged Flagship (Top) with 26000 km mileage, I first looked at the selling prices of similar cars. The closest match in terms of variant and condition is the 2023 Changan UNI-K I4 2.0L Turbocharged Standard variant, which sold for SAR 120000 on 2023-10-09 with 18000 km. Given that the Flagship variant is typically more expensive than the Standard variant, I adjusted the price upwards. The listed prices for similar Flagship variants range from SAR 82000 to SAR 125500, with the most relevant being SAR 121500 for a car with the same mileage. Considering the selling prices, listed prices, and the higher trim level, I estimated the market price accordingly.