If it was me I'd order me a live shipping box from horizon and send it to the supplier or ask them to do it and charge you for it and send them the way it was posted here and on the heritage thread back last year when Tom Roebuck sent those rare Buff rock eggs all the way from Va. to Az. to Cindy Novick. Those express, prepaid priority mail boxes is not the way I want mine shipped(have once didn't work out so well an these were expensive rare eggs too) never again, me! It doesn't matter what is written on those type(pictured above) of shipping containers most of that type mail goes through automated system and hardly ever sees a human hand much less any human eyes esp at a point where it would matter most. The live crates they actually try to handle them better and will convey them in a more suitable manner. J/s and my three cents worth.
Jeff
Jeff