These commemoratives tend to always be expensive, but they are cool. Tuvalu makes quite a few, but I think Niue produces the most of any country. I think the governments produce these to increase revenue to help out the citizens.
!BBH
!PIZZA
!INDEED
Yeahh
I've seen loads out of Niue.
Lovely designs always from them.
I could look at a wonderful design and guess at least 70% of the time that it's from Niue..