“We also allege that in many cases both Woolworths and Coles had already planned to later place the products on a “prices dropped” or “down down” promotion before the price spike, and implemented the temporary price spike for the purpose of establishing a higher “was” price.
Profits have increased as a percentage of revenue (i.e. profit margins have increased).
A cooperative is one way to start on that: https://www.abc.net.au/news/2024-07-10/supermarket-alternative-co-ops-save-money/104078660
Their definition sounds like too much work, would be better to pay someone to do the work