Long-term value comes down to a few key factors: rarity, demand, and supply caps. Discontinued collections like the Bravo, Cobblestone, or older souvenir drops tend to perform better over time. https://dmarket.com/cs2-wiki/ goes into detail about what makes a skin “investment-grade,” including case rotation history and collector behavior. Another tip is to look at skins that have strong visual appeal or pro player popularity — those tend to hold demand. Avoid common drops from active cases unless you’re flipping. Also, watch float values and pattern ID — they matter more than most realize when investing.