I started by examining the selling prices of similar cars. The most relevant data point is the 2017 Kia Cerato LX 1.6L (Base) with similar mileage and condition, sold for 22500 SAR on 15 Oct 2024. Another 2017 model with lower mileage sold for 32000 SAR on 3 Sep 2024, but this is likely higher due to the newer model year and lower mileage. A 2015 model with similar mileage sold for 30000 SAR on 11 Sep 2024, but this is an older model. The 2016 hatchback variant sold for 33500 SAR, but it's a different body type and higher trim. The listed prices for 2016 models range from 22000 to 33000 SAR, with the most relevant being 22000 SAR for a car with higher mileage, delisted on 10 Aug 2024. Considering these factors, the selling price of 22500 SAR for the 2017 model is a strong indicator, and the listed price of 22000 SAR for a similar 2016 model supports this range. Therefore, I estimate the market price for the 2016 Kia Cerato LX 1.6L (Base) in average condition to be slightly below the 2017 model's selling price.