Negligence is unacceptable, and will get an employee fired if it can be traced back to them, but at the same time, I'm conflicted as I almost always select the cheapest shipping method. It's a minor miracle that I can have parts and equipment air shipped from China for just a few dollars, and while packages do sometimes get damaged or destroyed, I figure that's more a side effect of cheap, high-volume shipping than a true failure of the system.
Coppice is absolutely right that to ship fragile, heavy equipment, you need to add expensive packaging to go through the normal shipping channels. Your box WILL be dropped, probably a meter, and if you're not lucky, onto a corner, not a side. A 20kg piece of equipment can't just be wrapped in a layer of bubblewrap and a cheap cardboard box if you want it to survive cheap shipping.
The alternative to high end packaging is to pay extra for special handling by a courier, but that only makes sense for local shipping.