are offering up to $20 off with voucher code, you get $20 off if you spend over $150 in one transaction, or $15 off when you spend over $100:

Shoe Box voucher code: SAVE2015
Deal: Save $15 if you spend over $100, or $20 if you spend over $150 full priced items only.
Expires Midnight Sunday 2nd of June 2013.
Buy Shoes Online at Shoe Box Australia | Women's Shoes | Men's Shoes | Fashion Shoes | Casual Shoes