The belief that eating healthy is expensive is largely a myth. The most nutritious foods - eggs, canned fish, legumes, frozen vegetables, oats, and chicken thighs - are among the most affordable items in Australian supermarkets. The expensive version of healthy eating (a莽a铆 bowls, smashed avocado on $7 bread, organic everything) is optional, not required.
A practical $75 weekly grocery list from Aldi or Woolworths: 2kg chicken thighs ($12), 1kg ground beef ($12), 1 dozen eggs ($5), 2kg oats ($4), 2kg rice ($3), 4 cans tuna ($8), 1kg frozen broccoli ($3), 1kg frozen mixed vegetables ($3), 500g Greek yoghurt ($4), 1L milk ($2), sweet potatoes 1.5kg ($4), canned chickpeas x 3 ($4), olive oil ($4), basic spices and sauces (soy, sriracha, herbs) ($7 budget). Total: approximately $75.
This list provides approximately 200g of protein, 350g of carbohydrates, and 80g of fat per day - a solid macro baseline for most active adults. Cook the chicken and beef in bulk with different seasonings (Monday's chicken gets cumin and paprika, Wednesday's gets soy and ginger). Combine with the rice, vegetables, and eggs in different configurations for variety. The investment of 2 hours on Sunday and $75 eliminates expensive, poor-quality food choices throughout the week.