Well, here's the deal. My food bill is 75% of what it was before I started on my journey of local/organic/close to the source eating. It is true that often, organic products cost more than non-organic. This is not always the case, though. Also, when you eat natural foods that have not been processed and over-packaged, you are not paying for the processing and packaging. My food bill has gone down largely because my trolley does not contain pre-prepared, convenient foods. You pay for convenience. This includes jams, sauces, snacks, breads, yoghurts - things you can make at home, but that people often don't. As a society, we are time poor, this is true. We are also nutrient poor.
Here is a photo of what I would put into my trolley for a standard-ish fortnight. There are some things here, such as vinegars and bread mix, that would bump up my bill, but that would last me a good month to six weeks. The contents of this photo cost me $300. A more 'standard' fortnight, without these bigger items, would probably cost about $250 for the fortnight. We used to spend $400. Much of the fruit and vegetables is organic. It is ALL Western Australian grown. Most of it comes from within 200-odd kilometres. The flour is local, biodynamically grown. The meat is local, organic and free ranged. (Actually, the meat was bloody expensive. That bumped my bill up somewhat. I can't wait to be up North and shooting my own meat again.)
There are a lot of arguments against buying organic foods. The cost is the most common I come across - I shop for a family of four on a single social worker's income... this argument doesn't wash with me. Another is the science behind organics - this is a whole other post, but to my mind, it comes down to what we are prepared to put into our bodies. I would rather my children eat fruit that has not been sprayed with pesticides, or meat that has not been pumped with preservatives. I would rather know exactly what is going into their bodies - real, wholesome food, not a bundle of numbers on an ingredient list that reads like an algebra exam.
This is why I shop the way I shop.