These are rocket-assisted, fin-gliding, GPS-guided high explosive rounds. The "cheaper old" rounds aren't cheap or old by anyone's standards, even the Americans

These are rocket-assisted, fin-gliding, GPS-guided high explosive rounds. The "cheaper old" rounds aren't cheap or old by anyone's standards, even the Americans'; they're just not bleeding edge. Not to mention that there are future artillery technologies, rail guns etc, that the Navy is planning to install on these ships.