To estimate the price of the 2015 Mazda CX-9 V6 3.7L High+ (Mid) with 213500 km mileage and average condition, I considered the following data points: 1) A similar car with 212000 km mileage and average condition sold for 45500 SAR on 2024-03-05. 2) Another similar car with 243000 km mileage and good condition sold for 46000 SAR on 2023-12-03. 3) A car with 248000 km mileage and good condition sold for 47000 SAR on 2024-05-05. Given the target car's average condition and slightly lower mileage compared to the first car, I estimate its price to be slightly lower than 45500 SAR. The listed prices of similar cars range from 41000 to 55000 SAR, but these are not actual selling prices and tend to be higher. Therefore, I estimate the market price to be around 45000 SAR.