Groceries are expensive. Simple statement but something I didn't realize until I started to stock the fridge of my first apartment when I was 19. Damn near $5 for cereal? Now I understood why I didn't always have my beloved Kix or Honey Nut Cheerios growing up. But fast forward years later and I've learned the art of keeping my belly, and my debit card happy.Every week I check my grocery store's circular to see what's on sale. Then I go through my coupons to see if I...