When you buy the box of oatmeal cubes, you're buying the right to buy oatmeal cubes. When you remove them from the container is when you actually purchase the c

When you buy the box of oatmeal cubes, you're buying the right to buy oatmeal cubes. When you remove them from the container is when you actually purchase the cubes. Similar to a Costco card, or buying a phone to access apps in the app store.