1. What is the TollTag?
TollTag lets you go through the tolls without stopping. Very nice.
2. How much does it cost?
I have the plan where I pre-pay $40. When my account gets low, they charge my credit card another $40. Very convenient.
3. How long is it valid?
Until you quit paying into your account.
4. Have you tried it and is it worth it? Or would you rather just spend the 0.75, 0.45, etc. for the tolls?
It is totally worth it if you live near or around any of the toll roads. It is so nice not to have to dig for change everytime I want to get on 190.
Plus it is fun to scare people in your car when you don't stop for the tolls & they don't know you have one.