Where abouts are you in Melbourne? I used to do all my fruit and veg shopping at the prston markets. Could do it all for a family of four for around $30 - $40 a week/10 days. I find them cheaper then the Queen Vic or South Melbourne due to the fact they are definately not a tourist market. You see lots of Greek and Italian grandmothers out there. Use Aldi to do your main shop. They are significantly cheaper then others, especially for basics.