I found Cambells Chunky soups to be my favorite meals on the road. They can be had for $1.00-$1.99, and come in a ton of varieties. On top of that they are easy to open, and easy to eat only needing a spoon or just slurp it out of the can like I did some nights. I wound up only heating up one can on my entire trip. Most tend to be a bit heavy on the salt, but if you drink mostly water it evens out. Some have low salt varieties too. Very hard to find good cheap food on the go, it's practically an oxymoron. Aside from the Cambells, I mostly ate peanut butter out of the jar, and maple and brown sugar oatmeal. Those canned tuna fish meals were very tasty, not sure about healthy though.