To estimate the price of the 2015 Nissan X-Trail I4 2.5L SL AWD W/Safety Shield (Top+), I considered the following data points: 1) A 2016 Nissan X-Trail I4 2.5L SL AWD W/Safety Shield (Top+) with 155000 km sold for 45000 SAR on 2024-03-19. 2) Another 2016 model with 123000 km sold for 45000 SAR on 2024-05-01. 3) A 2015 Nissan X-Trail I4 2.5L SV X-Treamer AWD (Top) with 148000 km sold for 44500 SAR on 2024-05-17. 4) A 2015 model with 169076 km in good condition sold for 49000 SAR on 2023-10-22. 5) A 2014 model with 144700 km in average condition sold for 25000 SAR on 2024-02-02. 6) A 2016 model with 233000 km sold for 34500 SAR on 2024-05-16. 7) The car in question is listed for 50000 SAR but not delisted. Considering the higher mileage (293000 km) and average condition, I adjusted the price downwards from the similar models sold recently.