When I bought it pre-release it as, I think, 39.95 USD excluding shipping fee, which was another 10.00 USD. And I also got hit with some small, collectively < $2 international exchange fees charged by my bank. It was about $54 all told which is what I was told to expect. Budget for $60 USD and you'll do fine.
I think some of those conversion fees were my d-bag bank trying to hit me up for charges. YMMV.