Signature Range is a brand of progressive enterprises who own Woolworths, FoodTown and Countdown stores so you can buy it from any of those stores.
You won't get it from New World or Pak N Save.
As no-one has mentioned it, we have also bought Nestle Cocoa from Pak N Save.
Ian
yes I get it all the time in New World, Fresh Choice, Countdown ... and we live in a small town (where rye flour is a true novelty)