To start, take a look at this screenshot:
Curiously my Augment Exchange shop is missing Might III, Precision III and Technique III capsules. Is there something special I need to do to be able to exchange for these or am I just bugged?
I've heard from multiple sources
including the community wiki* that the "Attack III" Capsules should be present in this shop. I've scrolled through the list multiple times and they're nowhere to be found.
EDIT: *I somehow missread the page on the wiki talking about this NPC shop, rank III augments aren't actually shown on that page.