Moved to Forum (Targeted Offer): Original Link
Got this in an email. No idea if it extends to other people or just those who've received the email.
Conditions quoted:
*Open to Australian residents 18 and over. Does not include cash transactions. Customers who make 6 or more transactions over $10 using 28 Degrees MasterCard between 1 July 2014 and 31 July 2014 will have a $20 credit applied to their account on their next statement. The account must be open and not in default of your credit contract when the credit is applied. A customer can only qualify once for this offer.
I dont see that option, my AMEX show payments in USD but the 28 degrees doesnt. I have not found a way to change it.