If you can't find any in the regular groceries, you might want to try there (if you have one near you; I'm in Illinois, too, and there are three that I can get to without too much trouble, although one is much closer than the rest).
I was just coming here to say KROGER too!! Check any "generic store brand" because many are made by the same company and some are, some aren't - read-read-read the labels. A couple other store-brands that are vegan, I just don't know what stores...
There is also an Asian brand called "Bulldog" that is vegan, you can find it at most Asian markets.
Seriously - way cheaper than specially made health-food/Whole Foods store stuff and tastes SO MUCH better than that Annies stuff - blech!