Added in Patch 6.0 of the Endwalker Expansion, you’ll actually have to do a bit of work in order to gain access to it. N-1499’s Vendor inventory is tied to the Shared FATE System, first introduced in Shadowbringers. This means you’ll need to complete a large number of FATEs in the Ultima Thule Zone in order to unlock all his wares. Specifically, you’ll need to be Rank 3. Each Rank requires a different amount of completed FATEs.
Rank 1 unlocks immediately Rank 2 unlocks after completing 6 FATEs Rank 3 requires a whopping 60 FATEs!
Each FATE you complete will reward you with the Bicolor Gemstones you need for the Wee Ea Minion. So as you work your way towards Rank 3, you’ll just simply need to set 400 or so aside. The other bit of good news is that while you’re grinding out all these FATEs you have a chance to spawn the World Boss Chi. Its FATE “Omicron Recall: Killing Order” not only allows you to earn 86 Bicolor Gemstones, but also Chi Bolts should you win. Twelve Chi Bolts can be traded for your very own Level Checker Mount with Nesvaaz (Radz-at-Han, X:11 Y:10)! With that in mind, N-1499 does carry some other unique items along with the standard Grade IX & X Materia. His full list is: If anything else, that orchestrion is absolutely worth it. That is, if you haven’t gotten sick of the song by the time you’re done grinding FATEs. Which is entirely possible considering you’ve got to do so many. Once you’ve brought peace to the ends of the galaxy, the Wee Ea Minion will be yours! Best of luck in your grind.