Search:

The boxes don't have to be paid for. You can just take them from the PO or arrange to have them bring them to your house (via your mail carrier) for no charge.

There are better box/shipping options anyway. I use boxes from Uline - they are much stronger, don't rip/tear/crush, and, though they cost me $.50 each, they are typically $2 for USPS First Class. ...