Steam コミュニティマーケット

Steam ウォレット内の資金を使用して、コミュニティのメンバーとアイテムを売買できます。

Note: Steam Trading Cards, Profile Backgrounds, Emoticons, and Gems purchased on the Steam Community Market will not be tradable or marketable for one week after purchase. We are making this change to combat fraud (which artificially increases the prices of these items), and to help maintain a safe and healthy item economy within Steam.

Untradable Steam items can still be used like normal. They just cannot be immediately used in trades with other Steam users.