To estimate the price of the 2018 BMW 730 Li I4 2.0L Twin Power Turbo (Top) with 105000 km mileage, I first looked at the actual selling prices of similar cars. One car with 92000 km sold for 138000 SAR on 2024-02-27, and another with 101000 km sold for 132000 SAR on 2024-08-12. Given the similar condition and specs, these prices are highly relevant. Next, I considered the listed prices of similar cars. A car with the same mileage and specs is listed for 147000 SAR but not delisted, indicating it might be overpriced. Another with 101000 km was listed for 138000 SAR and delisted on 2024-08-13, suggesting it might have sold close to that price. Considering the selling prices and the listed prices, I adjusted for the slightly higher mileage of the target car and market trends to arrive at a fair estimate.