Shippers often assume the choice between a full container and a shared container comes down to volume alone. In practice, transit time, cargo sensitivity, and how firm your delivery date needs to be all weigh just as heavily.
A full container gives you exclusive control over loading, sealing, and scheduling — useful when cargo can't be mixed with other shipments or when timing is fixed. A shared container costs less per unit of volume but adds consolidation and deconsolidation steps at either end, which can add days to transit.
For recurring shipments below a full container's capacity, it's often worth comparing the shared-container cost against the schedule flexibility a full container buys you, rather than defaulting to whichever option looks cheaper on paper.