Too Expensive to eat healthy

It has been 5 years since I graduated college with my undergrad where I did 4 years of track and field. It was easy to go to the gym, track practice, and lift because I didn't have to work! It was class, track, go out! Because I was burning so many calories, I was able to eat what I wanted and keep a figure. But now, I must work at it. Because my day is 5am-midnight, it's hard for me to get a workout in. Recently, I am trying to do cardio and abs every day, and hope to lift a few days a week. the biggest problem I have? FOOD! I love to eat... I love fast food, chocolate, junk, etc. I still, somehow, have kept a figure, but I want to start eating healthy. The problem? TOO EXPENSIVE!! I eat Kashi cereal for breakfast, but I want to buy lots of fruits, chicken, veggies, etc, but let me tell you, I cant afford it. I bought blueberries that were $4, strawberries for $3 and wanted to buy Albacore tuna.. but even that was expensive! How is the Surgeon General going to say that obesisty is an epedemic in AMerica and we need to eat healthy, but no one can afford the healthy foods out there! It is really irritating!