Trading is a mechanic that involves interacting with and purchasing items from the various npcs in the world of Attune.

• Items are purchased from npcs with gold.
• Npcs have a limited stock for each item they sell.
• Npcs have both a guaranteed item list and a random pool of items they can sell each day, varying based on weather, mood, etc.
• Npcs periodically restock their inventory (e.g. after a day passes).
• Some items do not restock and are permanently sold out once the player buys them.
• Some npcs won't sell the player items until after a quest or dialogue has been completed.
• Nps can expand their shop as the player progresses through the game.
• Npcs have their own gold and they 'buy' when the player sells items to them.
• Npcs have items they like and items that they don't like. This affects the sell price.
• There are some items you can't sell like quest-specific items.
• Items sold to an npc can be bought back for free until the npc restocks, after which the item disappears.