A topic that will probably create some controversy on this board, or at least I hope so. Frankly, I can't afford the medium and expensively priced places - hardly ever. But I feel nonetheless, there are some great places to eat, that are inexpensive or "cheap".
For instance, I live on the West Bank, and DiMartino's on DeGaulle has an excellent oyster or shrimp po-boy, served on hot Italian bread. They also have some classic potato salad, and a special shrimp-potato salad. A po-boy with potato salad (enough left over for half another meal) would be maybe $10.
What are the other places like this in the New Orleans area?