This is an English speaking board and the Yamato online shop only ships Macross items to Japan. There are a few regular posters here who run shops like Valkyrie Exchange, Lost and Found Toys, Toy-Wave, and Twin Moons Anime. There are a few other stores many others frequent like Hobby Link Japan, Angolz, Overdrive-Inc, and Big Bad Toy Store. Some people probably shop almost exclusively on eBay. Finally, there are at least a couple members who live in Japan and provide the service of hunting down toys for members (for a nominal fee) like member Save and member Samurai Monkey.
PS - I highly recommend becoming friendly with Internet search engines. Type in the toy you want and you'll find many places selling it.