Guild Wars 2

Part of Quip III collections includes crafting Confetti Pouch (or multiple pouches).
One of the ingredients is Black Powder which is listed as being sold by Thegran in Tela range.
Thegran DOES NOT sell Black Powder.
Additionally is the Confetti Pouch a one use product or you need multiple pouches?
They are quite expensive to make (~7G) and you need to use 10 pouches in total.

edit: fixed

The Hunter (precursor for the rifle) also needs Black Powder making it impossible to craft atm.