To estimate the price of the 2013 Kia Optima I4 2.0L GDI (Base) with 335283 km mileage, I primarily considered the selling prices of similar cars. The closest match is a 2015 Kia Optima I4 2.0L GDI (Base) with 237000 km sold for 29000 SAR on 2023-12-11. Given the higher mileage of the target car, I adjusted the price downwards. Other 2015 models with higher engine sizes and different variants sold between 26000 and 41000 SAR, but these are less relevant due to different engine sizes and trims. The listed price of a similar 2013 model with the same mileage is 29500 SAR, but listed prices are generally higher than selling prices. Considering the depreciation and higher mileage, I estimated the market price accordingly.