Yes, I said it...FREE!!! A while ago, while my husband was still active duty, the Post Office advertised to Military wives that we could get shipping boxes delivered to our homes for free. I ordered a lot, as my goal was to ship to my husband every week while he was out to sea for 6 months. Well, I went through those boxes. Recently, I saw a post that someone did (I'm so sorry, I can't remember who), where they used the Priority Mail boxes for paper boxes. I thought this was just what I needed. So, guess what....the Post Office still sends out Priority Mail and Express Mail shipping boxes to ANYONE that orders them for free! I went out to the USPS.com website and ordered shipping supplies. They have Priority Mail boxes that are 14.375x2.875x15.875, so I ordered a case of them.