We came across this article from CHOICE comparing Everyday Rewards, Flybuys and Aldi, and thought it had some pretty interesting insights.

Their numbers suggest that if you're shopping at Coles or Woolies just for the points, you're probably still spending more overall than shopping at Aldi or chasing the best specials across different supermarkets. The points and discounts help, but they generally don't make up the price difference. Worth a read if you've ever wondered