To estimate the price of the 2018 Mercedes E200 I4 2.0L Turbocharged Standard with 200900 km mileage, I first considered the selling price of a similar 2020 model with 30652 km sold for SAR 181500 on 2024-03-26. Given the 2-year difference, I applied a depreciation rate of 10% per year, resulting in an approximate value of SAR 147015 for a 2018 model with similar mileage. Next, I reviewed listed prices of similar 2018 models: one with the same mileage listed for SAR 73000, another with 154000 km listed for SAR 160000, and another with 151000 km listed for SAR 131500. Considering the higher mileage of the target car, I adjusted the estimate downward. The average of these listed prices is SAR 121500, but given the high mileage and average condition, I further adjusted the estimate to reflect a more realistic market value.