They quote you a price in your currency with absolutely no mention that there will be other fees. The priced charged is in Euros, so your credit card will be charged more than quoted at reservation time. Then on car pick up, the car rental company (Fox in my case) will change you extra fees that they say the third-party price is not covering about 33% in my case plus a deposit on top of that. So before going out with the car, your credit card as been changed about 220% the quoted price. On return Fox is refunding the deposit on the credit card only 5 business days later.
Customer service did nod answer my emails