To estimate the price of the 2021 Volkswagen Teramont V6 3.6L SEL (Top) with 30000 km mileage, I first looked at the selling prices of similar cars. The closest match is the 2019 Volkswagen Teramont V6 3.6L SEL (Top) with 81000 km sold for 115000 SAR on 2024-04-05. Another 2019 model with 83600 km sold for 106000 SAR on 2024-05-20. Considering the 2021 model is newer and has significantly lower mileage, it should be valued higher. Next, I reviewed the listed prices of similar cars. A 2021 model with the same specs and mileage is listed for 153000 SAR, and a 2022 model with 32000 km is listed for 154000 SAR. These listed prices are generally higher than actual selling prices. Given the depreciation and market trends, I adjusted the value downwards from the listed prices but higher than the older 2019 models' selling prices.