To estimate the price of the 2015 Mercedes G63 AMG 5.5L V8 with 128672 km mileage, I considered the following data points: 1) A 2017 model with 44000 km sold for AED 340000 on 2023-10-19. Adjusting for the older model year and higher mileage, the value would be significantly lower. 2) Two 2014 models with 73900 km sold for AED 174000 each in March 2024. Given the similar condition and specs, but considering the 2015 model year and higher mileage, the price should be slightly higher. 3) Listed prices for 2015 models range from AED 190000 to AED 210000, with the closest match being AED 199500. Considering these factors, the estimated market price is derived by balancing the selling prices and listed prices, adjusting for the model year and mileage differences.