I've had heavy brass-&-glass zooms sent from mainland Europe with just crumpled newspaper for packing. The lenses arrived with internal damage. Maybe it's a Green thing for them to not use polystyrene? If they wrap the lens with paper or don't wrap it at all, the lens arrives covered in dust.
Tightly crumpled newspaper can work OK, but you need a good amount of space around the item and a waterproof outer. Allow for the package to drop from a conveyor from at least waist height.
I prefer RMSD to couriers, as the couriers race around with the packages rattling around in the back of a van.