We used recycled boxes much more in the past than we do now. When we think back on how we used to ship books, it is a bit frightening, but 99% arrived in fine condition with no buyer complaints.
Certain Amazon boxes get reused, especially for large art books, but we much prefer using Multi-D boxes for most of our book shipments. All books arrive safely, even ones that have travelled abroad and back (unfortunately), and no extra packing materials are needed–light years better than using ordinary U-line boxes.
Thank you, Marilyn, for introducing us to Multi-D boxes!
Using uniform new boxes, of what ever type suits your business, is a time saver in the long haul and your customers will appreciate your professional packing.