How often do CS2 weapon case prices change?

It usually depends on supply, demand, and if Valve changes drop rates.

CS2 case prices are driven by a mix of market speculation, drop pool changes, and collector demand. Some cases get discontinued, which immediately drives their value up due to reduced supply. You can track these shifts historically on https://dmarket.com/cs2-wiki/, where they’ve mapped out how certain cases gained momentum — especially after major updates or when new knives were introduced. For instance, Operation Hydra Case spiked after it was removed from the active drop pool. Conversely, newer cases usually stay flat until they’re rotated out. The wiki also gives good insight into the best times to buy or sell based on previous Valve patterns. So while nothing is “guaranteed,” you can definitely make informed timing decisions.