If you have enabled e-commerce and configured Shipstation, you can add shipping material to a course with a price.
On the shipping material step, click on the “Add materials” button.
You will see a popup that will list out all the products that are available to add. This list includes all the available products from your Shipstation account.
When the course is created, you will see a new "Material" tab added to the course detail page. You click on the edit icon and change the materials.
Note: An indication of a material’s unavailability means that the material is either out of stock or has been disabled from Shipstation’s panel.