Jason: I can relate. Some USA companies charge more than the items cost to ship to Alaska when they use the private firm UPS's 2nd-day air instead of the national post, USPS. It really bugs us Alaskans to be treated like a foreign country and I schlep a lot of stuff in luggage from California to Alaska each year. My Aussie friend (went to school together in California K-12 but she's in Canberra now) left the USA last month, so I don't have that option just now.
Are these the US$60/pair ones that REI has? How many pair? Are you a member of REI?
Here's one option: You buy them, have them ship to me, and I'll remail them to you. USPS rates for 1- to 2-pound packages / large envelopes were $11 to $18. You could paypal me the postage cost.
Or, I buy them from REI (they will ship to me for free as it is over $50), then I use my future REI dividend (historically 10% of purchase price) towards the postage, which may cover all the postage. You paypal me or send me a bank draft for the sock cost in US funds, whatever is easier.
Note that British shoe sizes are a touch different than USA sizes, by about 1/2 size for size 10. I'm not sure which scheme Australians use. At least the "European sizes" (e.g. size 44) is a constant. Also, read carefully any info about fit, "runs large", etc, in on-line customer reviews.
If any of that sounds helpful, PM me and we can swap information.