According to Google...
48.95 US dollars = 47.3221 Australian dollars
66.08 AUD = 68.3664 USD
If I buy them at 48.95, fly to Australia, sell them at 66.08, I would get 19.4164 (USD) per board. Hmm. What's the carry-on limit? 50 pounds? I wonder how many boards that is?
48.95 US dollars = 37.7322 euros
40.36 EUR = 52.3510 USD
Not as lucrative but it may pay for the plane ticket.