@Azz You seem to be getting really unlucky! Try using this site as you can get email and SMS notifications: http://www.nowinstock.net/uk/videogaming/games/fireemblemechoes/.
Good luck and happy hunting!
While this account won't make me popular here I will say shopto appears to ship to many countries. I was able to successfully order a copy to Canada from shopto. I'd imagine that Ireland is an easier task then Canada @Azz.