An improved shipping system includes a base deck section. The system further includes an upper-tier deck section, that moves between a position atop the base deck section through a variety of positions, including positions that put the upper section out of the way of loading and unloading any load on the base deck section. Cartons may be atop both the base deck section and the upper-tier deck section, for shipments, with the upper-tier deck section in the raised configuration. When emptied, the shipping system may be returned with its upper-tier deck section moved down to a position atop the base deck section, and the shipping system stacked upon a similar improved shipping system. Shipping efficiency is increased as much as twenty percent and perhaps more. All components are steel, and may also be plastic, wood and the like.