To estimate the price of the 2014 BMW 730 Li I6 3.0L Twin Power Turbo Li (Top) with 142100 km mileage, I first looked at the selling prices of similar cars. The closest match is a 2014 BMW 730 V6 3.0L Twin Power Turbo Li (Top) with 110000 km sold for 71874 SAR on 2024-07-16. Considering the higher mileage of the target car, I adjusted the price downwards. Another relevant data point is a 2015 BMW 730 Li I6 3.0L Twin Power Turbo with 62700 km sold for 82000 SAR on 2024-06-27. Given the higher mileage and older model year of the target car, I adjusted the price downwards. I also considered the listed prices: a 2014 BMW 730 Li I6 3.0L Twin Power Turbo with 142100 km listed for 75000 SAR and a similar car with 181000 km listed for 68500 SAR. These listings suggest a market range. Taking into account the actual selling prices, the higher mileage, and the listed prices, I estimated the market price accordingly.