To estimate the price of the 2014 GMC Acadia V6 3.6L SLE2 (FWD) with 300,000 km mileage, I considered several data points. First, I looked at the selling prices of similar cars. A 2014 SLE2 (FWD) with 180,372 km sold for 22,000 SAR on 2023-09-16, and another 2014 SLE2 (FWD) with 222,290 km sold for 31,000 SAR on 2023-11-05. Given the higher mileage of the target car, I adjusted the price downwards. Additionally, a 2012 SLE2 (FWD) with 186,500 km sold for 20,000 SAR on 2023-10-23, and a 2012 SLE2 (FWD) with 235,000 km sold for 24,000 SAR on 2023-11-17. Considering the higher mileage and average condition of the target car, I further adjusted the price. Lastly, I reviewed the listed prices: one 2014 SLE2 (FWD) with 300,000 km was listed for 26,000 SAR, and another with 312,000 km was listed for 29,000 SAR. These listings are typically higher than actual selling prices. Taking all these factors into account, I estimated the market price accordingly.