Looking at the way you are thinking to get to the overall cost of these ships , I wouldn’t start counting my chickens yet
@Afif . There isn’t enough information about the contents of the agreement to decide how much each ship is going to cost.
These ships could cost anything from 400 to 550 million dollars depending on the equipment they are fitted with and the effect of inflation over the next 3 years.
Remember that they will also have at least 3 major modern radar systems on board. There will be Sonars and EW systems. Also there is that new MIDLAS system with tens of VLS missiles. There will be 16 Atmaca missiles, CWIS, STOP guns and possibly a Turkish RAM alternative point defence system ( Us version costs around 25 million dollars). Don’t forget the torpedoes and counter measure systems.
The Hisar Class OPVs being built which are the smaller version of these ships, in almost naked state will cost around 110 million dollars.
Ada Class corvette‘s cost to the Navy is around 260 million dollars. And it has only limited number of self defence (RAM and main gun) and assault weapons.