Toll costs on NJTurnpike from exit 16 to exit 6

No. Perfect competition assumes free entry and exit, which implies that fixed costs/entry costs are or are close to 0.

Traveling from Tulsa, OK, on 412-W and I-35 North to get off at the Kellogg exit in Wichita, KS: there will be a $1 and a $2 toll on 412, and then the Kansas Turnpike will charge $2.50 in tolls from the South Terminal to exit at the Kellogg exit. So it will total $5.50.

An exit sign with no arrows is immediately next to or above the actual exit or exit door. An exit sign with an arrow can be away from the exit and points in the direction of the exit.

The possessive form for the noun exit is exit's.