Several possibilities for j-music depending on where you live. In the States, you might try Borders, Kinokinuya Bookstores, Music Millenium (Portland, OR), or your independent music dealer (if there are any left).
I have no idea why someone might think there's a limit on repeatedly importing an album into the US.
That said, about half my j-music purchases are through cdjapan.co.jp --- the rest via Kinokuniya or local music shops that specialize in music.
People who shop at Target or Walmart deserve the kind of music they sell there
