I found this reading the book the Omnivore's Dilemma by Michael Pollan, if you are good at "eating the chicken and spitting out the bones" I highly recommend this book. I found it quite fitting after last months food challenge.
"The researchers found that a dollar could buy 1,200 calories of potato chips and cookies; spent on a whole food like carrots, the same dollar buys only 250 calories. On the beverage aisle, you can buy 875 calories of soda for a dollar, or 170 calories of fruit juice form concentrate. "
Real food just plain and simple costs more. You have to make it a priority or you will never be able to afford it.