Fresh Fruit and Veg in Adelaide?

Hi, I have a small farm with lots of animals. It can get very expensive to feed them all. I have been going to the Gawler fruit and veg auctions to get good deals, but to be honest, I am getting sick of the whole auction experience, and would rather just find a good green grocer type shop where I can get good deals. By good deals I mean somewhere that is significantly cheaper than Coles or Woolies and that sells bulk lots. Any leads would be appreciated. Bear in mind that I live about 90 kms outside of Adelaide on the far side of the Lofty Ranges and don't want to travel any further than is necessary.