[BroJoeK]

GeneralisimoFranciscoFranco: "Russia can build a war ship for $65 mm?
We should get them to build some for us."

blitz128: "To be fair, it is a “warship “, but not a very large one with a crew of 32-80.
Perhaps large patrol boat is more appropriate, but it also appears it needs escorts to defend itself."

Curiously, at 1,700 tons, Sergey Kotov was roughly the size of an older US WWII destroyer "tin can" like the Farragut class.
As such, it was considerably larger than the 330 ton old US Navy Cyclone class patrol boats, the last of which was decommissioned in 2023.

Sergey Kotov is less than half the size of US Littoral Combat Ships (LCS), which we now consider pretty much useless.

So to find a rough US equivalent, you have to look at the US Coast Guard Famous-class cutters, of which we have 13 in service.

I can't find a unit cost of construction for the Famous-class, but would bet money they cost us a lot more than the $65 million price tag on Russia's ex-Sergey Kotov.

[blitz128]

Sounds reasonable, wouldn’t be surprised if the real cost was even lower once bribes and corruption are removed from cost. With that said what did they get for 65 million, not trying to be confrontational or disputing your facts, but a 76mm gun, a few machine guns and can launch missiles, and was sunk by a few USVs.
Perhaps more of indication of where current naval doctrine is read battleship vs carrier