To estimate the price of the 2019 Infiniti QX30 Turbocharged I4 2.0L (Mid) with 123500 km mileage, I first considered the selling prices of similar cars. A 2018 QX30 2.0L (Top) with 94000 km sold for AED 55000 in April 2024, and another 2018 QX30 2.0L (Top) with 77000 km sold for AED 38000 in June 2024. The car to be estimated is a 2019 model with higher mileage and a mid trim, so it should be priced lower than the 2018 (Top) model with lower mileage. Next, I looked at listed prices: a 2019 QX30 2.0L (Mid) with 138300 km is listed for AED 54000, and a 2018 QX30 2.0L (Mid) with 151500 km is listed for AED 45000. Considering the car's average condition and higher mileage compared to the listed 2019 model, the estimated price should be slightly lower than AED 54000. Taking into account the depreciation and market trends, I estimated the price accordingly.