To estimate the price of the 2015 Renault Duster I4 2.0L SE (Mid) with 140000 km mileage, I considered the following data points: 1) A 2015 Renault Duster I4 2.0L PE (Base) with 147000 km sold for 16000 SAR on 2023-10-17. 2) Another 2015 Renault Duster I4 2.0L PE (Base) with 115000 km sold for 21000 SAR on 2024-02-07. 3) A 2015 Renault Duster I4 2.0L PE (Base) with 175300 km sold for 16500 SAR on 2024-02-11. 4) A 2016 Renault Duster I4 2.0L SE (Mid) with 57100 km sold for 27500 SAR on 2023-09-24. 5) A 2017 Renault Duster I4 2.0L SE (Mid) with 66000 km sold for 23500 SAR on 2024-05-24. 6) A 2015 Renault Duster I4 2.0L PE (Base) with 221500 km sold for 19000 SAR on 2024-08-15. 7) A 2014 Renault Duster I4 2.0L LE (Top) with 143000 km sold for 15500 SAR on 2024-02-13. 8) A 2014 Renault Duster I4 2.0L LE (Top) with 143000 km sold for 16000 SAR on 2024-02-26. 9) A 2014 Renault Duster I4 2.0L PE (Base) with 295000 km sold for 15000 SAR on 2024-08-17. 10) A 2015 Renault Duster I4 2.0L SE (Mid) with 140000 km listed for 16000 SAR. Considering the SE (Mid) trim and the average condition, I adjusted the price slightly higher than the base variants but lower than the newer models and those in better condition.