No shit, junk food is so much cheaper. My food budget has tripled so far.
I've been buying bananas, various melon, Total cereal, eggs, wheat muffins(with healthy add-ons), chicken, fish, applesauce, lowfat milk, sunny delight(tons less sugar than orange juice), meats, granola bars for the munchies, and water. On this alone my budget has more than doubled!! Also I've added a protein shake mix @ $35 for about a 2 week supply, vitamins @ $15 for a months worth.
Thing is I'm eating more than ever before, yet still losing weight and building muscle!!