expired Men's Sunglasses A$3.96 (Usually A$15.87) @ Hallenstein Bros, A$3.96 delivery
This was posted 5 months ago, and might be an out-dated deal
NOTE: Coupon and Free shipping have been removed by the store (http://www.ozbargain.com.au/node/88983#comment-1171176). Not much I can do, would have marked it as expired earlier but I haven't been on. You can still get some good deals on the site, and if you combine this with the other deal below, it's not a terrible deal (ok $8 for 1 pair of sunnies isn't great, but if you buy multiple it could still be ok)
Saw this after browsing their site from another deal. Only $5 for some decent-looking sunglasses in a variety of styles. FREE SHIPPING (their T&C said $5 for orders under $50, but I just checked after some users pointed it out and it is in fact free!).
USE COUPON FOR EXTRA 20% OFF ORDER TO MAKE IT NZD$4 (A$3.18) (thanks to http://www.ozbargain.com.au/node/88983#comment-1170674)
All prices are in NZD on their site, so according to Google (now confirmed) it is 3.18 AUD.
Ps. Sorry if I did it wrong, it's my first deal.