I'd love it if the "healthy food is cheaper" lie were true, but it is not. So far I've seen something about eating a ton of beans because Mexico is known for its health food and a suggestion that I must be an idiot eating low fat ice cream all day. Produce was barely mentioned, because we all know most Americans eat to many expensive veggies anyway.
It is not cheaper. And of course, nothing is easier than opening a bag of chips...even if that isn't relevant to the point.
Calorie for calorie, shit calories from junk will always win. In fact, they are 10 times cheaper:
http://well.blogs.nytimes.com/2007/12/05/a-high-price-for-healthy-food/
Calorie for calorie, no shit, of course junk food is cheaper, because it's all carbs. Fat people don't need to be concerned about "calorie for calorie". That only applies if you are trying to stuff as many calories as possible into your fat face.
The real truth is that you can put together a healthy meal for cheaper than junk food. It might not have as many calories, but like I said above, and thought was obvious, fat people don't need more calories. They need less.
Bulk chicken breasts, canned tuna, oats, mixed greens, bananas, carrots, frozen fruits, and eggs are all incredibly cheap. Sure, they don't pack a lot of calories, but you can make a filling meal from them.
You could make 20 different healthy meals alone just from those cheap, healthy ingredients.
You don't need to have a starch with every meal. I think that's where fat people get confused. A meal for a fat person is 3lbs of carbs, some fat, and no veggies.