25% storewide at Franklins Rockdale. Might be nsw-wide as the stores are closing down so it might be a good idea to keep an eye on them. Apparently Franklins Maroubra had a 50% off but that's closed now.
Generally pricier than the big 2 and Aldi, but if you grab things which are currently on sale + 25% off can be quite good.
Things I found good:
4 pack Peters Drumsticks $3 ($4 on special)
Abbottsford bread $2.61 (#3.49 on special)
This is what they've done at each store just before it closes down, doesn't seem to go any cheaper than 25% off - so I doubt it's national, though any store that is still open will almost certainly have it just before they close down.
Did find it was a good saving on nappies which don't tend to get discounted that much, plus some more expensive torches (but it depends on what they have in stock).