So i went balls out hopping it was for the good. I got 6 of them right now. But when I did the thextera hunt I never talked to that dude. But I just did right now and its been a long time. Its still not for sell. I miss out on that one for ever? It seems like the best one.

the grimoires are what you but at the bazaar right? they help you gain better items when you defeat enemies thats all. I never got them till after i finished the game and i wasnt slowed down by not having them. Since you get them from tje bazaar you have to sell things to unlock them, im no expert in using the bazaar tho.
And talk to 'that guy' after the hunt? you mean the guy who told ya about the hunt i think? It shouldnt matter when u visit them really, but i remember him saying something to me about been late when i got round to meeting him after the hunt. never slowed me down tho.
Agent?

That one is different -- you have to find the guy in the Muthru Bazaar, talk to him, and then the item pops up under Bazaar Goods the next time you go to any shop.

Got it thanks 18k G but got them all but the last one