It is so true that vegetarian eating is frugal in and of itself. I've been eating great food and it doesn't cost much at all. I keep adding to my price book. The grocery bill has slowly been coming down. And we are eating much healthier!
Now, some things are more expensive. Ketchup, vegenaise, Earth Balance margarine, whole wheat bread (when I buy instead of make), all are more expensive. But they don't have high fructose corn syrup, or msg, or trans fats, or hydrenagated oils. That is worth the money, to me.