I feel like there are other old threads discussing this type of thing… but I ain’t gonna go find ’em now.
I sold 2 boxes from UCS B-Wing sets to someone in China for like $13 each, but the hassles of packing and shipping probably outweighed the “profit”… to each his own, but I mostly don’t bother saving boxes these days. Now, creative reuse / using as packing material for other sets, I can get behind…