Yes it is very e7xpensive especially from El Catey Airport to Las Terrenas but it is mostly the tourist traffic that is paying for this. Locals on motor bikes don't have to pay the tolls. This was a really bad deal that was signed by the Hipollitio Government and they really didn't care about the long term ramifications. The road is a great asset to the DR. It cut the trip from Santo Dominigo to 3 hours where it use to take 6 hours or more. I will gladly pay the toll for the convenience. It is outrageous what is being charged on the Las Terrenas section of 27kms but you can always take the Sanchez mountain route if you don't want to pay it.