Look for sales especially at the dollar stores. Make a list of things you would like to get for your preps and each month dedicate whatever budget you have to an item. Like a 25# of rice one month, the next month do something for medical so you could pick up a couple bottles of rubbing alcohol and peroxide...very inexpensive. Depends on your budget as to how much you buy each week or month. Start out with what you need/want on paper and how much you have to spend. Make priorities and stick to the list.As Evolver said learn how to can foods to put up, you have no idea how much money you will save and how addictive it will become. Buy meats in bulk and pressure cook them in jars, put up veggies, soups, sauces, broths, jams and don't forget the dehydrator!