I thought I'd pop in and say that I have some of these masks.

I have a Silver Kakama, a Gold Pakari, a Golden Miru, a  broken Green Miru*, and a White Akaku.

About the broken Miru: It has a crack from the top of the mask to the right eye, large stress marks (that appear light green) on the right ear (or around there), several smaller stress marks around the place, and the chinstrap is cracked on the right.

It can still be worn by a Toa though.

The other masks are in what I'd call "perfect condition," but they're scratched all over the place (and by that I mean the scratches that bricks get when they go in the Lego box, they're not very noticeable unless you're looking for them), the Gold and Silver masks are slightly dulled, and some of them have a small amount of dirt which can be washed off easily.

Otherwise, they're pretty good (except that green Miru).