500 sheets of Reflex A4 Copy Paper for just $3.49 at Coles
Looks to be a pretty decent price as I see the same paper selling for between $5-$6 everywhere else. Although it's not quite the "half price" they're claiming in their sale catalogue. Coles' offer is limited to 6 reams per customer, but if you really want to squeeze a bargain out of this one you could always check with OfficeWorks to see if they'll price beat it by 5% giving you a 17.5 cents saving per ream.
If Officeworks agrees then ultimately this means you can buy 6 of these for $19.90, as opposed to their current online price of $29.76 (or $4.96 per ream).