Got this via email, but only valid til Tuesday so better be quick! Says I can share it with my friends, so that would be all the nice people on ozbargain. If you're not nice, please leave your name below so I can tell them you can't use it ;-)
Discount Code: 8-M-9wT5rx
Discount: $20.00 discount
Expiry Date: 11 Oct 2011
Minimum Spend: $100.00
A couple of ideas:
1) They allow you to make your own mixed dozen - http://www.jackswine.com.au/create_md.php?bottlecombo=4_3 so you could make something to be $101-20 if you like to fiddle round
2) Otherwise cheapest item they have (even though there is a 'per bottle' price it doesn't seem you can buy a case + 1 bottle) is a twin tote bag (?maybe with 2 bottles of cleanskin in it) for $24.99 http://www.jackswine.com.au/product_details.php?pid=1380 or a corkscrew for $24 (?!?!? made of gold?) http://www.jackswine.com.au/product_details.php?pid=1306
3) Some of their already cheap $100+ cases:
http://www.jackswine.com.au/product_details.php?pid=1448 for $109.9-20, or http://www.jackswine.com.au/product_details.php?pid=444 for $107.90-20 or http://www.jackswine.com.au/product_details.php?pid=463 for $110-20 or most cleanskins at http://www.jackswine.com.au/products.php?cat=clean_skins