Are Full Containers Always More Cost-Effective?

It is also usual practice now for each of say, ten factories to ship full containers of its products to a consolidator who will unpack and repack all ten containers before shipping the assortment to the distribution centers. Moving one container from factory to factory and get each factory to fill just one tenth of the container, and then shipping it directly to the distribution center may be cheaper and likely to be faster, as the consolidator is eliminated altogether.