A 12-sided die/dice

You can have a look at the places mentioned in this thread, although the information is about six years old now:

And this thread is even older:

I think this place ships internationally, although that’s probably more than you’re after.

(Odd timing that you ask about this. About 72 hours ago I bought a set of polyhedral dice basically on the way to the airport in Canada, after searching forumosa and Amazon and realizing that they’re difficult to get here, and the dice on Amazon [strike]will[/strike] won’t ship to Taiwan.)