To estimate the price of the 2015 Chevrolet Impala V6 3.6L LTZ (Top) with 291095 km mileage, I considered several data points. First, I looked at the selling prices of similar cars. A 2016 LTZ with 180000 km sold for 57500 SAR on 2024-06-01, and a 2014 LT with 232000 km sold for 23500 SAR on 2024-01-28. Given the higher mileage and average condition of the target car, its value should be lower than the 2016 LTZ but higher than the 2014 LT. Next, I reviewed listed prices. A 2015 LTZ with 252000 km was listed for 40500 SAR, and a 2015 LTZ with 230000 km was listed for 48000 SAR. Considering the higher mileage of the target car, its value should be slightly lower. Finally, I noted that a similar 2015 LTZ with 291095 km was listed for 51500 SAR, but this is likely an overestimate. Combining these insights, I arrived at a reasonable market price estimate.