I don’t think it is feasible for an American seller to ship multiple cases internationally. Cases weigh 10-11 pounds each. However, 1-6 boxes is doable.
I have never seen a $500 booster case from a business. You might occasionaly catch a staff member who worked an event trying to dump a case for cheap. But $500 a case is what some lower volume businesses pay directly from a distributor. Currently the cheapest booster case option on ebay is $580 shipped domestically.
Oh and there might possibly be a forum sealed product purchase option in the near future.
And this is why shipping cases to australia sucks (/•ิ_•ิ)/ the thing is… Some ebay listings are charging about what it would cost for me to ship a case from America… So I’m close to just going with buying a case from aus ebay for 989aud. But I looking at these distrib people selling boxes… Not cases in aus for 143aud each.