And if you tell them that Troppo sent you you can have as many books you want for free. (Note: you may be required to perform the Troppodillian secret handshake.)
Club Troppo
Fearlessly dispensing political, legal and economic analysis (and some whimsy) since 2002
Here is another one, which I received today, for 35 percent off one full priced book:
http://email.borders.com.au/au/2008/20081024/coupon-02-au.asp
I just noticed the fine print on the one that I linked specifically excludes it being used in Victoria. But if you’re not in Victoria, it should be fine. Guess someone’s taking pity on us ex-pat Victorians.