How much do you spend on groceries?

Something that always comes to mind, every weekend when I make my grocery list, is how much is one to spend on food? How much is too much? Is there such a thing as spending too much on grocery items? On average, with a household of two, we spend about $80.00 per week on groceries, averaging about $320.00 per month. This does not include any restaurant visits, but does include non-edible items found at a grocery store, such as toilet paper, paper towels, garbage bags, and aluminum foil. All of this also does not include any savings through coupons, as I do not always have them with me if it is a more spontaneous trip to the grocery store. We also do not really eat any processed foods, so a lot of my grocery items include fruits and vegetables. I would be interested in hearing from you all:

How much do you spend on groceries? Do you think you are spending too much?