While there's only 5 Dragon Stones, Dogi and Geis have equivalent weapons and each of them require 50 Souls Stones so for everyone that is 350
only just had enough running the final dungeon the first time for Adol's and atleast his changes attack types
then you need more for armour so in total be around 450-500
Iron Ore on the other hand, early game item found all over the place, probably collected that much in the entire game
feels a bit grindy to get all of them but will see how the final boss goes with what i can buy/make
Memor-X