boxes & documentation add greatly to resale.
I keep them and just throw them in the attic.
I always keep the box and all the literature that comes in them. I also like it better when I buy, if the seller has the box and all the goodies. I think it helps on the resale.
Same, I'm on my 3rd plastic tub, I keep scope, gun, red dot, rail, etc boxes. Yeah, a bit OCD.
I wonder how much more shooters (not collectors) will pay for a gun with a box vs one without?