As the post was in this section, Nate, it’s a given that it was directed at yourself.
On the value add aspect, we’re well aware of product specific packaging being it’s own added value, and likely acquired in volume from a Chinese manufacturer, with or without custom branding applied.
A prime example would be the plastic or fabric cases that forms part of the overall cost of the new rifle you’ve just purchased.
Regarding lack of space at your premises, and I’m going to presume this is where the OP was going with his query… you wouldn’t require any additional square footage taken up if you used the storage container as the item which ships and sits on the retailers’ shelves, and is similarly sized to how the product is sent out currently in its cardboard box.
All you would need is a sleeve over the container.
Assuming it adds £10 or so, by the time profit margins have been added on, so what? It’s a Natechrony branded carry case, which we can’t buy from Aliexpress because it doesn’t exist.
I’m somewhat surprised you haven’t already done this, since the case would serve as additional marketing material if customised with your logo/branding. Food for thought, hopefully.