There are companies that do third party insurance, but you need to be careful of what they cover, some will only cover loss for used goods. Call BAX's insurance agent directly, I used someone to ship a 500 lb pallet of gear from FL to CA, and was initially told they would not insue any of it, when I pushed the issue, they agreed they would cover any and all damage incurred in transport and loss, which was really all I wanted.
I took tons of pictures of the gear, packaging, and the final pallet prior to their picking it up, and fortunately for me it all got there well, so I can't tell you more on how the insuranced 'paid off'