Hi.
I've read that I would need a lot of material from Grand Companies.
But I cannot find detailed info on this.
Since I have a lot of GC seals, I want to buy some now.

Do I really need thousands of Cokes?
What other GC mat do I need to buy?
Is there any website that lists what kind of material is needed regarding airships?

http://ffxivforge.appspot.com/
this website does not list GC mat :S