Had same experience in Miami in May 2018. Many toll roads. You need to have an advanced degree to keep track. Almost impossible to avoid. Who knows this coming into Miami if you're not from there? Thrifty said NOTHING about a $10 administrative fee PER toll when I rented the car. If I had a 30 cent toll, they charged me $10. After 4 days of driving, I had $30 in tolls and $90 in "administrative fees". Customers would never agree to this if they knew about these fees in advance. Very scammy. Why would a company not care about damaging their reputation like this? Needless to say, I am disputing the charges with my credit card company.