To estimate the price of the 2013 Geely EC 8 I4 2.4L Standard in bad condition, I first looked at the selling price of a similar car: a 2013 Geely EC 8 I4 2.0L Standard with 164500 km sold for SAR 17500 on 2023-09-28. Given the higher mileage and smaller engine size, this car would generally be valued lower than the target car. Next, I reviewed listed prices: a 2013 Geely EC 8 I4 2.4L GS with 90479 km is listed for SAR 16500, and a 2015 Geely EC 8 I4 2.4L Standard with 178000 km is listed for SAR 20500. Considering the target car's bad condition, I adjusted the price downwards. The 2012 Geely EC 8 I4 2.0L Standard with 290000 km listed for SAR 13500 also suggests a lower value for older models. Factoring in the bad condition and mileage, I estimated the price accordingly.