[ChameleonSaint]

I have seen some cheap phone cards on the internet offering about 4cents per minute to phone Australia from Japan. I would feel better purchasing a card from a store (like 7-11) in Tokyo rather then over the internet (some of the sites look questionable).
My question is can you buy cheap phone cards easily in Tokyo? I have seen the KDDI ones but the rate is very high.

Any advice on phone cards is appreciated.

Cheers