Tokyo record shops

Planning a trip to Tokyo and planning on going to tower records shibuya. Any tips or experiences to share for a first timer or other store reccomendations. The genres I will shop for are vg and movie soundtracks and late 90s early 2000s dance and house. These genres specifically as they are rarer/more expensive and there seem to be a lot of ebay listing's from Japan. So was hoping they would be cheaper in store and more chances of finding stuff I would not normally find in Australia.

THANKS