If you take the typical Mapquest directions you should spend around $20.00 in toll. Mostly on the Jersey turnpike. Keep cash on you they have a tendency to open and close toll boths and they are all...
If you go down to Paducah, Ky to Jacksonville, fl there aren't really any tolls. Past there, I couldn't tell you because you didn't specify where in Florida.
You can get from North Carolina to Florida without paying a single cent in tolls. Toll roads are a bit of a rarity in both states, and in the states in between.