To estimate the price of the 2013 BMW 520 I4 2.0L Twin Power Turbo with 275000 km mileage in average condition, I first looked at the actual selling prices of similar cars. Two cars with similar specs and conditions sold for SAR 31500 and SAR 32000 in December 2023. Given the similar condition and slightly lower mileage of these cars, I consider these prices as a strong reference. Next, I reviewed the listed prices of similar cars. The listed prices ranged from SAR 34000 to SAR 46000, but these are generally higher than actual selling prices. The closest match in terms of mileage and condition was listed for SAR 34000 but not delisted, indicating it might not have sold at that price. Considering the selling prices and the listed prices, I estimate the market price to be slightly lower than the average of the selling prices due to the higher mileage of the car in question.