I had a mini one first 4.95 and got credited 4.95 first time I used it. The problem you can't go from car to car, and wanted to drive our other one this year, so I bought the 25.00 one and now I can go between both cars and use in rentals when we fly down. Works great, we picked up the mini at our first turnpike stop, but ordered the other one by mail, since we would be flying down before driving again. I pack in my carryon and have no problems going thru security either., I just found out that I can buy a Sun Pass, and avoid the crazy prices charged by the car rental companies and not have to stop to pay the tolls. And we're driving to Vero Beach, so we'll be in the car quite a bit over several weeks. $20 makes sense. Where can I easily buy a Sun Pass near MCO? I don't have time to get one mailed., We always rent a car and we got a Sun Pass for our Disney/Florida trips. Never had a problem and we use it a few times a year. Bill Us, too. We've had our own Sun Pass for years. The only time we had a problem was in December when we missed a toll because our battery was dying. We replaced the battery and it works again like a charm..