@disney_fan_1986,
Snowglobes are sold around the world, so I do not think there are international proscriptions about shipping them. Individual carriers may not want them included in their cargo, but that is something the GSP management probably has figured out already.
From talking to someone who works at the airport where the U.S. GSP hub is, in Kentucky. Most of their cargo is shipped in pressurized cargo cabins, in containers. That means there is little chance of the globes exploding due to temperatures or pressure. It is also why shipping via the GSP is sometimes very slow. They wait until they can fill a container destined for a region, thus receiving bulk shipping rates, before sending a container on its way.
FYI, the GSP retains the right to repack items they feel are in too large of a box, or weigh too much if THEY feel there is too much packing material. It doesn't matter to them if an item gets damaged after being re-packed, it's the poor seller who eats the cost after all.
I can't speak for others, but many buyers complain about GSP shipping costs being too high, and shipping taking too long. Many will not buy from sellers who use it after one or two purchases. I will not buy from international sellers who use the GSP.
"THERE IS NO SUCH THING AS FOOLPROOF, BECAUSE FOOLS ARE SO DARNED INGENIOUS!" (unknown)
