The most common delivery methods for in-game products are:

1. Face-to-face delivery: the customer meets the merchant inside the game to receive goods such as gold, silver, gems, or items.
2. Gift delivery: the merchant sends the item directly through the game’s gifting system.
3. Auction House / Market delivery: the customer lists an in-game item and the merchant purchases it for the agreed amount.
4. Direct top-up: currency are added directly to the customer’s account using their Player ID or User ID.

For more information on specific products, click here: https://www.kinguin.net/campaign/in-game-items