Unless you travel to Japan regularly, I would not recommend it. Should you need support or to return it. I used to go to Japan every month. That is the better scenario for buying expensive electronics. Even then, I never did it. I would prefer to hop in my car or have my dealer come over to my house.
My rule of thumb on this stuff is that if my purchase just disappeared or broke and I would immediately laugh at my self and say... "now that was stupid"... I will not do it.

