To estimate the price of the 2018 Land Rover Discovery Sport, I first considered the offer accepted by a seller for a similar car with the same variant and specifications, which was SAR 77500. This car had a mileage of 112000 km, whereas the car in question has a higher mileage of 159000 km. Higher mileage typically reduces the car's value. The listed price for a similar car with 112000 km was SAR 78000, which aligns closely with the accepted offer. Given the higher mileage of the car in question, I would adjust the price downwards from the accepted offer. The new car price for a 2025 model is SAR 273000, but this is less relevant due to the age and mileage of the car in question. Considering these factors, I estimate the market price of the car to be slightly lower than the accepted offer due to the higher mileage.