First time online shoppers at Coles can now earn $15 cashback from PricePal, here's the link: http://www.pricepal.com.au/Coles
There is also a coupon available until 31 May 2015 "CLICKCOLLECT62" which gives you $10 off your first Click and Collect grocery order with Coles Online when you spend $100+
(FYI - there's free shipping on your first order, and free shipping every Wednesday if your order is greater than $100)
So whats minimum spend to get $15 cashback?