I subscribe to a number of magazines (I ordered them when they were really good deals) including Woman's Day. The current issue has a great article on Secrets of Extreme Grocery Shoppers on page 110.
Among the things I read was the fact that you can buy fresh produce at some of the dollar stores. The author found lettuce, scallions, a large bag of fresh ginger, five pounds of russet potatoes, and six heads of garlic in a mesh bag for $.99 each or $4.95.
Many of the things discussed in this article have been discussed here including how if you make up your menus and eat at home you will save $$$.
One of the things I like about this magazine is the menus for a month.
I believe that if you go to your local library, you can read this magazine for free.