There are different levels of rarity possible, with the highest tier only being available through crates and blueprints. You'll be able to earn supply crates and blueprints that can be unlocked to earn new skin variants and weapon skins, respectively, with the purchase of a key. The TF2 comparisons hold true for other aspects of this system as well. These will be sold for real money, while many (but not all) items will also be handed out for free through an in-game drop system that sounds reminiscent of Team Fortress 2's. The Trading Floor, as it's called, will sell new weapon skins, outfits, and outfit skins.
