Thanks for the replies - I'd seen the earth and QP deal, QP would be a waste of money and since we're applying for a home loan (gulp!) soon, we're trying to get our credit card limits down (why does it matter if the balance is always positive anyway? Arggh! End rant).
Overseas address is a possibility but yeah, could be hard to pull off. Reckon we'll just pony up the dough and try and drink $82.50 worth on our BNE-PER route