To estimate the price of the 2017 Hyundai Accent I4 1.4L Kappa (Base) with 155500 km mileage, I first looked at the actual selling prices of similar cars. The selling prices ranged from SAR 26500 to SAR 33000, with an average of SAR 30625. Given the higher mileage of the target car, I adjusted the price downwards. Next, I reviewed the listed prices of similar cars with similar mileage, which ranged from SAR 22000 to SAR 30000, with an average of SAR 26000. Considering the car's average condition and higher mileage, I estimated the market price to be slightly below the average of the listed prices.