Two items were sent together.
Other sellers are paying for the shipping of two items.
Just because it's official doesn't mean you're free to do what you want.
offensive
The response time to messages on the transaction screen is slow. If you can wait patiently, there is no problem.
If you can wait patiently, it's not a problem. ・There was a defect in the product, and the response was good. However, I would have liked them to confirm the number of items in the package when they shipped it.