Japanese Kit Kats; Melbourne CBD

[Gouki]

So, I've tried a couple of flavours and am pretty impressed and want to expand my Kit Kat experience. I found some at a convenience store on Swanston St (the one just down from Yoyogis), by luck, but I was wondering if anybody had any other shops around the Melbourne CBD, or suburbs close to Melbourne that stock Japanese Kit Kats?

I'm also pretty happy for this thread to get turned into a generic "Japanese snack/drink/food" sightings thread for the area if anybody is interested.