National Cheeseburger Day is Sept. 18, and fast food chains across the country will be offering some delicious deals for those who want to indulge on a budget. Whether you're looking for deeply discounted burgers or other food items, chances are you'll be able to find your next fast food meal for a good price. Read on to learn just what you can get depending on where you stop in. McDonald's You can secure a double cheeseburger from the Golden Arches for just 50 cents on Sept. ...