To estimate the price of the 2019 Toyota Corolla I4 1.6L XLI Executive (Base++), I considered the following data points: 1. A 2018 Toyota Corolla I4 1.6L XLI Executive (Base++) with 71000 km sold for 52500 SAR on 2024-05-29. Given the lower mileage of the target car (31000 km), it should be valued higher. 2. A 2020 Toyota Corolla I4 1.6L XLI Executive (Base+++) with 149000 km sold for 51500 SAR on 2024-08-26. The target car has significantly lower mileage and is a slightly older model, so it should be valued higher. 3. A 2018 Toyota Corolla I4 1.6L XLI (Base) with 122000 km sold for 48000 SAR on 2024-03-06. The target car is a higher trim and has much lower mileage, so it should be valued higher. Considering these points and the average condition of the target car, I estimate its market price to be around 54000 SAR.