Guild Wars 2

For some reason when i try to buy from the vendor that takes a pristine sample plus money, it doesnt realize I have them in the bank. The same with the tri-key.

So I actually have to have them on my character when I purchase anything.

Indeed, the items must be on your character.

I don’t know of any vendors that work any differently:

• Currencies in the wallet are always available (dungeon tokens, gold, karma, badges of honor, …).
• Any other types of items, tokens, etc used as currency must be in your inventory, i.e. on your character.