I bought off Ebay a few months ago a cheap plastic take down case for around $40-45 which came in a cardboard box that I have used for round trips via priority mail to gunsmiths and that has worked well. I get it back.
For shipping sold lower priced used shotguns I need something less expensive and some of them are long guns so any type of case that costs half of that is fine but I was hoping for a cardboard box that it came in. Doesn't sound like I will find it.

So many guns, so little time!