The Japanese Pokémon Centers will begin selling Pokémon Omega Ruby and Pokémon Alpha Sapphire Hoenn Starters and Hoenn Legendaries Plushies starting on September 20th, 2014. They will also be available on the Amazon Pokémon Store starting on September 27th, 2014.

pics
Kimori / Achamo / Mizugorou Plushies (ぬいぐるみ キモリ・アチャモ・ミズゴロウ) - 1,200 yen each plus tax


pics pics
Kyogre / Groudon / Rayquaza Plushies (ぬいぐるみ カイオーガ・グラードン・レックウザ) - 2,315yen each plus tax
Life Sized Kimori / Achamo / Mizugorou Plushies (ぬいぐるみ 等身大キモリ・等身大アチャモ・等身大ミズゴロウ) - 4,500yen each plus tax


Source: http://www.pokemon.co.jp/info/2014/09/140904_p03.html