Jon Barr
Wildly cheap prices — one hot dog for $3.25, two plus a tropical drink for $6.95 — and it's a New York institution over 50 years old. Coffee plus a breakfast sandwich for $3 might be the cheapest breakfast in Manhattan.
Heads up: There's no seating whatsoever and the setup is very bare-bones; while the breakfast menu is cheap, a neighborhood bodega might be better for a dollar or two more.