To estimate the price of the 2019 BMW Z4 Sdrive 20i 2.0L TC I4 with 30000 km mileage, I considered the following data points: 1) An offer accepted by a seller for the exact same model and mileage at AED 144000 on 2024-06-20. This is the most reliable data point. 2) Listed prices of similar cars: AED 135000, AED 177999, AED 184200, AED 159990, AED 164990, AED 169990, and AED 169990. These prices are generally higher than the accepted offer, indicating that the market might be slightly inflated. The lowest listed price is AED 135000, which is likely closer to the actual market value. Considering the accepted offer and the listed prices, I estimate the market price to be slightly above the lowest listed price but below the accepted offer, reflecting a realistic market value.