As a former UPS employee, I can assure you, every piece of shipped packages are treated with the same respect (almost none). It doesn't matter how it feels or looks, it'll get stuffed in!

My parents love the raw cactus honey, as do their friends. So whenver mom and dad come down to AZ to visit, they buy a few dozen 3lbs jars of honey. That would be way overlimit on the plane, but its actually quite cheap to ship Fedex/UPS.