I know this isn't what you're looking for, but just to put it out there: usedcardboardboxes.com ships you, well, used cardboard boxes in bundles according to apartment/house size. These generally have been used by retailers to send their merchandise to their stores (when we used them, there were a few Banana Republic boxes, for instance) but they come in all shapes and sizes. If anyone's planning a move and needs lots of boxes, not just one type, I recommend these folks!