You just never know, though. I sent a pkg to CoreyNC from Culberson NC to her home in NC. Took 3 days. No guarantees, remember? Where was the pkg for those days? Who knows? I don't usually put tracking on it. It does no good. If it's lost, doesn't matter where it is because then by the time it gets where it's going, if it does, the eggs have lost hatchability. Knowing where they were doesn't help.
The hatched rate on shipped eggs varies because of the handling during shipping in addition to the packaging by the seller. Then on top of that, the incubation process may not be perfect, either. So, whether it was good or bad hatch rate, may have not necessarily to do with the shipping itself or it can be the combination of factors.