To estimate the price of the 2015 Mercedes S400 3.0L V6 TC Standard with 81000 km mileage in average condition, I considered several data points. First, a similar car with 94000 km in good condition sold for AED 112000 on 2023-11-08. Given the average condition of the target car, its value would be slightly lower. An offer of AED 115500 was accepted for a car with the same mileage and specs on 2024-04-30, but this is higher than the actual selling price. Listed prices for similar cars range from AED 89000 to AED 170000, with the most relevant being AED 130000 for a car with the same mileage and specs, which is likely an overestimate. Considering the selling price, accepted offer, and listed prices, I estimate the market price to be slightly lower than the selling price of the better-conditioned car.