The answer to this question is largely dependent on your needs. If you are looking for a one-time delivery of a small quantity of items, then buying a box from FedEx may be your best option.
However, if you are looking for a more regular delivery of large quantities of items, then purchasing a package from a shipping company like UPS or USPS may be a better option.
When it comes to shipping, there are a few things to keep in mind. First, make sure that the shipping company you choose can handle your specific needs.
For example, UPS is better suited for large shipments that require a lot of protection, while USPS is better for smaller packages that do not require as much care.
Second, make sure that you are aware of the shipping timeframes that the company offers. For example, UPS typically provides a faster delivery than FedEx, but USPS can also be faster depending on the distance that your package needs to travel.
Finally, be sure to calculate the cost of shipping before you make your purchase. This will help you understand the overall cost of shipping your package, and will allow you to compare different options more easily.