It is really fairly cheap to have a couple months worth of food on hand if one keeps to the basics.
Rice and beans last a long time.
Ramen noodle packs. And people should think about water. If the electricity goes out, then water may sooner or later fail to be pumped to your pipes. If an event occurs, immediately toss a clear painting dropsheet of plastic in your bathtub, and fill the tub with water for use later. You will also be able to drain remaining water from your pipes, garden hose and water heater for use. Helps to have some waterproof barrels on hand.
Survival food goes a lot better with water, your life may depend on it.