The navy is spending $2 billion for 200,000 rounds of the GPS-guided, rocket-powered projectiles, but it can also fire other kinds of rounds.
...and now it has broken down and needs a tow.
It's also first in its class and has teething pains. They will be worked out over time.
No it's not: 90 for testing, none for operational use. And those are the only rounds the gun can use,
https://news.usni.org/2016/11/07/navy-planning-not-buying-lrlap-rounds