Orichalcum becomes available in Traverse Town after rescuing Kairi from Hollow Bastion. Yes, this item is expensive if you want a lot of it. But don’t worry, because a limited amount of Orichalcum is available across all of the game’s worlds for free.
Finding Orichalcum Without Buying It
In Kingdom Hearts Final Mix, you’ll need 19 Orichalcum to craft one of everything that requires it in the Moogle Shop. And the game kindly provides exactly 19 Orichalcum from chests and challenges all around the various worlds:
Should You Bother Getting Extra Orichalcum?
It all depends on what you want and how you play. If you’re just looking to clear the game and the optional bosses, just the 19 Orichalcum in the wild will be enough. Just craft one of everything and make the Ultima Weapon–easy. However, if you’re looking to become a real powerhouse and create multiples of the good stuff, like Elixirs and Defense Ups, then you’re going to need more.