You can buy an EZ-pass from any state that issues EZ-pass. In NYS there are two authorities that sell EZ-pass and one has a monthly fee just to have the pass and the other doesn't. Shop your EZ-pass around the states that issue it. And you will also find that some ask a lot less questions than others. When we got our B we transferred the pass from a passenger van to the B and notified EZ-Pass - no problem. Many tollbooths have a weight scale that you drive over that also counts the axles. Where there is a higher toll for a heavier vehicle you will be charged that rate on your EZ-Pass. We find that this happens on some roads and not others. And within state the savings with the EZ-Pass are considerable over paying cash.