To estimate the price of the 2023 Toyota Supra 3.0L GR (Top) with 23823 km, I first looked at the new car prices for similar variants. The 2024 Toyota Supra 3.0T GR starts at AED 216900. Given the car is a 2023 model, I applied a 10% depreciation for one year, resulting in an estimated new car value of AED 195210. Next, I reviewed the listed prices of similar cars. The closest match is a 2023 Toyota Supra 3.0L GR (Top) with the same mileage listed for AED 202900. Other similar listings include a 2023 Toyota Supra 3.0L GR with 14320 km listed for AED 206900, and a 2023 Toyota Supra 3.0L GR with 23500 km listed for AED 205500. Considering these data points, I averaged the prices of the closest matches, which are AED 202900, AED 206900, and AED 205500, resulting in an average of AED 205100. Given the car's condition and mileage, I adjusted slightly downwards to account for potential negotiation and market conditions.