Just got an email from wiggle.co.uk, and they've got up to 20% off a selected range of ASICS shoes, including Kayano 18's (limited sizes though)
Price for Kayanos 18 is £88.67 + free delivery to Australia - discount code of 15% (use EXTRA15 at checkout) = AUD$117.05 as of today (22/6/12)
Choose GBP as the currency to avoid the bad conversion rates that they offer.
Have ordered from them before and the delivery time is about 8 days.
Personally I think the kinseis are a better buy. Love mine.