Saw this post earlier today on their Facebook page.
Depending on your luck, you'll get either a $20 or $30 gift voucher! That's up to $30 off any of your last minute xmas gifts.
The last day to sign up is 18/11/2016 and the last day to use the voucher is 24/11/2016 which excludes any Epic Hour deals, shipping fees and is not to be used in conjunction with any other vouchers, minimum spend applies. The voucher will be sent to you within 24 hours.
I am unsure what the minimum spend is as it isn't stated on the post or website, but will find out once I receive the voucher :-)
Unclear whether it's newsletter sign up or signing up for a Shopping Express account.