Originally Posted by
IAHtraveler
While it is considered by some a high fee for using the service, it's our job to be aware of the prices of services we use. Avis has long established the prices of the etolls in different locations at
www.avis.com/etoll.
Depends also on the country. Here in parts of Australia you must use the Avis etoll service, you are not allowed to use your own tag and in most stations can't pay cash anymore.