I started by looking at the selling prices of similar cars. The first car, with 66000 km and in good condition, sold for 54500 SAR on 2024-03-10. The second car, with 59000 km and also in good condition, sold for 60500 SAR on 2024-08-31. Given that the car in question has 61000 km and is in average condition, I adjusted the price downwards from the higher selling price. Next, I reviewed the listed prices. The closest matches were cars listed for 60000 SAR and 62000 SAR, but these were not sold and were delisted. Considering the average condition of the car in question, I estimated a price slightly lower than the average of the selling prices and the listed prices.