“Missiles cost a lot more than artillery rounds (usually).”
An Army FO that I knew had an occasion to call on the New Jersey.
As he started to walk them in, the sailor told him, tell us where you want it and we will put it there.
Each one is the cost of a new Cadillac.
Per naval experts, each 16 inch shell cost about $500.
https://www.g2mil.com/battleships.htm
A Tomahawk Land Attack Missile, which is the closest US missile counterpart and was the other option available to the New Jersey in dealing with a land target, costs $1.87M apiece.
https://en.wikipedia.org/wiki/Tomahawk_(missile)
The recent exception to that rule was the Advanced Gun System’s LRLAP 155mm round which was going to cost $800K-$1M per shot and was comparable in effect to an AGM-119 Penguin, which is less than $800K per missile.
And the weight of a Volkswagen (full of high explosives).