I agree that ramen noodles and Coke isn't healthy--that's college-kid eating. I am trying hard to avoid diabetes, so I can't eat white stuff like bread, sugar, potatoes, flour, pasta, or most grains. But I eat on less than $5. Example:
Breakfast: 3 or 4 scrambled eggs with cheese
Lunch: tuna salad made with a touch of Duke's and some sour cream, on greens
Snack: nuts, and home-made yogurt sweetened with Stevia
dinner: Hillshire Farms turkey kielbasa, $1.25 (Bought on sale, two for $5. Half of this is a little too much for me so each of the dogs gets a piece)
Salad greens with tomatoes, oil-and-apple cider vinegar dressing: large pile of greens that will last through four meals, $3.69, 1 tomato about a dollar
evening snack: cheddar and apple
Some days the menu costs a little more than $5, some days it's less. But $5 goes a lot farther if you don't stock up on crap food, cereal, soft drinks, sweet things, or anything that comes out of a box.
Yes, I am slender and fit.
That sounds like an excellent diet. My husband has diabetes, so our menu has changed over the last 15 years or so. Imho, it is much healthier.