Hey dude, I got mine from my shop up here, just north of Bris. They're called The Guitar Exchange in Morayfield. Talk to Dave, Cheyene or Steve and tell them Dan sent you. If they have one on the floor they should cut you a pretty sweet deal.
Nope. No need. You don't even need to go through customs to declare it. And I've bought 2 guitars from Japan as well as 2 guitars in US and brought them back no problems at all.
The real issue is either you check it in or hand carry it depending on what the airline will allow. Japan is pretty lenient on hand carrying guitars though I did use gig bags. Also I don't know if they've changed over the last few years.
Tokyo is massive. There's plenty of places. Have you been to Ochanomizu yet? There's a ton of different music stores in the one street alone. Shibuya and Shinjuku should have a few as well. Same with Shin Okubo.
Kyoto has a few in the south east shopping district. Same with kinko gakki south of nijo castle.
Osaka I can't remember too well but all I remember is there close to the station up north. Google gakki store locations and that should narrow down your search.
hey man, they didnt do a price match and lied to me about it being shipped offered me $200 of the $400 difference in store credit.. So i guess ill have to spend thousands of dollars at another shop from now on.