In the cost world, Carriers > Cruisers > Destroyers > Frigates. 15 years ago or so, a new destroyer was about $1B a I recall so $800M for a frigate seems almost like "why bother, just build some destroyers." But I suppose the cost for a destroyer is much higher now too.
Keep in mind that literally all the FFG(X) competitors are much larger than the Fletcher class destroyers that devoured the Japanese Navy - and the current DD-1000 destroyer class is actually larger than some *battleships* that fought in WW2.
Also keep in mind that any surface combatant at a minimum has to be able to fight in datalink with its peers or in conjunction with a CBG if it wants to survive in a modern peer or near-peer fight - that requires a lot of capability.
“$800M for a frigate. Wow.”
A lot of money for a ship that among other things, is intended to take torpedoes to save carriers.
Just kidding, I’m old, and I’m sure roles have changed.
A Burke-class destroyer is a bit over $1.8 billion.