Q: Does it cost anything just to have one? Are there any fees associated with them, other than just the cost of the tolls?
A: Hello there, I've just ran a quick check for you and I've found a pricing table and registration forms for e-TAGS from their official website. Here's the link: http://www.roam.com.au/content/application/product_features.asp?CC=26&CN=82 Since I don't know about your circumstances, I guess it'd be best if you read it yourself accordingly as the prices vary. Hope this has helped.