AGV or Caberg dealers in Christchurch?

Looking to buy my first helmet and have seen there are quite a few Caberg's and AGV's with 5 star Sharp rating in my price range. I can't seem to find any shops in Christchurch that sell either brand.

Has anybody any experience on where I might be able to find here to try on please?

Thanks

AGV or Caberg dealers in Christchurch?