OK, so you can't get everything at Target. However, you would be surprised at what you can get, at pretty decent prices.
I always get my cereal there and my chocolate Carnation Instant Breakfast which I have every morning in my coffee for my chocolate fix (plus prtotein vitamins and caffeine:)).
Can't get fresh fruits and veggies but you can buy them frozen. You can also get frozen chicken breast, ground beef & turkey, appetizers, pizzas, Bubba burgers, desserts and quick meals.
Check out the fridge section for milk (including a cheap hormone free brand!), lunch meats, breakfast foods and cheese.
Of course there's tons more. Their store brand is Archer Farms and so far I've liked everything I've bought there.
The bad side is, you're in Target, and if you're just buying food you have to make a b-line, ignoring the rest of the stuff that just happenes to fall into your cart.