Jamar said that you pay $5 plus 2.5% for ATM with a typical Canadian bank. That's horrendous. The $3 flat fee option is ok. Withdraw $300 and you are paying 1%.

This problem is not isolated to traveling in Japan for Canadians. If I were Canadian (and a frequent traveler) then I would look at other options such as opening a bank account in the US with Capital One, for example, which charges no fee and interbank rate. But maybe it is not worth it if these same Canadian banks probably fleece you in the CAD to USD conversion when you need to transfer funds to the US bank.