Most of the time bulk is the cheapest way to go, sometimes however, bulk totes can be more appropriate for your needs at almost as good a price.
The easiest to handle are 50 lb bags, they come on pallets. Some products are available in bulk as well as bulk bags of 1 ton or more and on pallets of 50 lb bags. You can order from the Fertilizer Brokerage quantities of 4 ton or more.
A full truckload will always have a cost/ton ratio which is lower than a partial truckload. One way to save is to order a truckload along with a friend or neighbor who can also use the product and thereby splitting the cost of freight between you.