The Delaware Turnpike is the most expensive toll road on a per mile basis ($4 each way) in the United States, not including bridge or tunnel tolls. Because there is only one mainline toll plaza and tolls were removed from exit and entrance ramps. a lot of people get off at the exit before the toll plaza and back on after the toll plaza. Not sure how practical that is but I've read a lot of people do it.
BobK/Orlando