To estimate the price of the 2021 Nissan Sunny I4 1.6L S A/T (Base) with 46000 km mileage, I first considered the selling prices of similar cars. A 2021 model with the same variant and higher mileage (65000 km) sold for 44000 SAR in March 2024. Another 2021 model with much higher mileage (107400 km) sold for 40000 SAR in July 2024. A 2022 model with similar mileage (41000 km) but average condition sold for 36000 SAR in March 2024. These data points suggest a price range between 36000 SAR and 44000 SAR. The car in question has lower mileage than the 65000 km car sold for 44000 SAR, which supports a price closer to the higher end of this range. Considering the condition and mileage, I estimate the market price to be slightly below 44000 SAR.