Me going

To the majority of the world at a consumer level and a retail level and often at a supplier and manufacture level
The content s of the package is the item that is of value and therefore the item that must at all costs not get damaged
Therefore
The box, any seal or shrink wrap, internal packaging is not as important and can receive a moderate amount t of damage as long as it still functions and does its job
Its job is to endure the safe arrival of the product inside
So trying to make sure the item arrives undamaged is easy as the original box it came in was designed to ensure that happened already
You have to explain that the condition of the item is more important then the actual item or items within the package
The external appearance is the most important thing to you, and if it becomes damaged in any way how ever minor, be it a tiny 1 mm dent to a corner or a tiny 1 mm fold along one edge then you will not be happy
And will have to leave bad feedback if your packing guidelines where not adhered too