Just found a really good post here from a "former coupon queen" who made the move toward a more natural lifestyle. This is what we are doing (although I certainly wouldn't use the words "former" and "coupon" in the same sentence for myself, yet!) so I found it a very interesting read. You might, also. I have found our grocery budget has gone up (way, WAY up) since we've gone more "natural" but also my kids are eating much more now that they are almost 2 and 3 years old. So I think the budget would have risen anyway.
By the way, that link will go to the blog where she guest blogged her experience. Her actual blog is here and I haven't looked at it so I won't vouch for it, but I can guarantee I'll be checking it out!