The Artifact Store is the in-game micropayment service that allows players to purchase various goods with their Steam Wallet money. It is not a unified location but a set of link icons in the lower left-hand corner of the main screen, each of which leads to a different item for purchase.
Note that this is separate from the Marketplace, where individual cards can be bought and sold with other players.
- Valve has not yet announced a decision over whether cards will ever be tradeable via Steam Community Trading.
- Opening Booster Packs will be spectateable.
- The inclusion of various cosmetic items is confirmed, but there isn't any solid information on what exact things are planned, and when will they become available.