I started by examining the selling prices of similar cars. The 2014 Lexus GX460 Platinum with 186700 km sold for 80000 AED in September 2023. A 2015 model with 265000 km sold for 75100 AED in July 2024, and another 2015 model with 181100 km sold for 78000 AED in August 2024. These are all Platinum variants, which are typically more expensive than the Prestige variant. The car in question is a 2014 Prestige with 197150 km. The listed prices for similar Prestige models include a 2014 model with 214500 km listed for 73000 AED and a 2015 model with 193000 km listed for 84000 AED. Considering the selling prices of Platinum variants and the listed prices of Prestige variants, I estimate the market price of the 2014 Lexus GX460 Prestige to be slightly lower than the listed prices but higher than the lower selling prices of Platinum variants, given its condition and mileage.