I found this site (netmagazines) that sends magazines to foreign addresses. The prices are all in US dollars and are pretty competitive. The average English magazine costs about 1000yen here so getting them sent from the states is actually cheaper. Last year I subscribed to Time Asia but I think I would prefer a few women's monthly magazines (which are cheaper) this year. That's makes me sound really dumb doesn't it? I mean trading Time for women's mags. Oh well.
This link will take you directly to the list of magazines that ship to foreign addresses.
Happy English reading!