You can buy keys from other players on the Steam Community Market. However, these are often significantly more expensive than the in-game price because they are "legacy" keys that remain tradable.
In late 2019, Valve updated key mechanics so that any key purchased in-game is permanently tied to the account that bought it. It cannot be sold on the market or traded to other players. buy csgo case keys
Sites like Skinflow or SkinsMonkey allow for trading or buying, but users should exercise caution and use reputable platforms to avoid scams. 2. Pricing Overview Estimated Price (USD) Trade Status In-Game Store $2.49 Non-tradable / Non-marketable Steam Market $9.00 - $10.00+ Tradable & Marketable You can buy keys from other players on