From today until October 23, Woolworths is offering reams of Reflex Copy Paper for $4 each -- but only if you order online. Copy paper regularly goes on special, but that's still a decent discount.
Woolworths is also offering free delivery for first-time orders. There's a minimum of $30, but eight reams of paper for $32 could be a good office supplies catch-up if you've never ordered from the supermarket before. (By way of comparison, Officeworks charges $4.95 a ream for Reflex, and that price applies whether you buy a single ream or a pallet of 400 of them.)
If you have used Woolworths before and hence don't qualify for free delivery, Big W sells a box of five reams for $20, with free delivery if you spend more than $50 online.