Castle #6075 worth

The catalog shows that the Castle #6075 is valued at $459.37 used [1]. The Wolfpack Tower #6075 is valued at $158.37 used [2]. Since the third item, LEGO Castle (6075-2) (Classic Castle), is unpriced in the current results, I cannot provide a specific value for it based on the catalog data. Generally, the value of LEGO sets is driven by the set's rarity, condition (especially if it's complete or sealed), and current demand. You can compare the current asking prices on the live listings shown on your screen against these sold values to see how the market is acting right now.