Personally i like the shops here....! We do all our shopping in Hallett Cove or Castle Plaza Foodland and have no complaints over cost or quality...!! I think Coles is well overpriced, and Woolworths are in the middle somewhere!
I agree with supporting the local business's...great idea...something the UK should of promoted long ago!
Even if some more supermarkets open up...they're will always be one with the monopoly that people will still complain about...!
In the end everyone shops for the best deal for whats available....