I got my pair through a friend that lives in Japan but there are more than a few guys that got them from CDjapan with good results. I think it depends on how much your willing to spend for shipping but they seem to get them within a week or so. I just know that guys that all have bought them through there all got theirs in a reasonable time.
+1 for CDJapan. I got my pair 3 days after it shipped. It was $74 sent via EMS