It’s definitely more of a collector’s market, especially for older souvenir skins from iconic matches or players. The prices can go crazy because of specific stickers, condition (like FN), and historical value. While some have appreciated over time, they’re not super liquid, and
crazy flips 3d flipping them for profit isn't always easy unless you really know the scene. If you're a casual trader, it's probably safer to treat them as collectibles rather than reliable investments.