That research method is more detailed than what most casual players do. I glanced at expensive knives once
https://droidjournal.com/the-most-expensive-knife-skins-in-csgo/54740 out of curiosity and realized the whole knife market is pretty complex. Stilettos and dopplers both tend to stay popular because of how they look. Tracking price trends and community sentiment makes sense if you're treating skins like investments. Most CS2 players just pick something they like and buy it without much analysis. Your approach probably prevents overpaying but takes time and effort