University of Rochester A great failing of the University of Rochester is its failure to provide food that is simulaneously edible and affordable. The River Campus is plagued by a monopolist concession to the corporate goodness of Aramark. Combine this with the geographical isolation of campus (bounded by a river, a graveyard, and the Strong Memorial Hospital), pickings are slim.
The footbridge across the Genesee in conjunction with the mythical Brooks Landing Project provides a ray of hope that good-cheap-nearby food may be possible in the forseeable future. But for now, you're best bringing your lunch from home. The Pit in Wilson Commons offers grilled (hamburgers and their ilk) and deep-fried items (fries, onion rings, chicken fingers), sushi (expensive and icky), and submarine sandwiches (of substandard quality).
Additionally there is a coffee shop which routinely offers garish lighting, incompetent service, and excessive styrofoam, and a sort of convenience store where you may purchase ramen, batteries, etc etc, at a remarkable markup. Danforth The The House of Six Nations Cafeteria at the medical center is not nearly as grand as it sounds, but it is cheap. If you don't mind walking a half mile Mt. Hope Diner is cheap and provides decent service.
Going there daily would definitely make you sick. Mykonos Express has great greek food, although to get enough for a filling lunch would be rather expensive. Subway, McDonalds, Papa John's, Wendy's, and Burger King are also with in walking distance (~30 minutes) although not recommended. The pulled pork sandwiches in Douglas are tasty and will fill you up.
Six bucks.