I recently rented a vehicle from the Bozeman airport and paid the prepaid rate through the website. Upon return I was charged $62 on my card. Not knowing what the charges were I called and was told it was normal airport fee's and taxes. I've been a longtime Avis customer (mostly paid after) but I can't say I've come across a situation where the quoted rate would differ when the car was returned with full fuel and good condition.

Is this a normal thing with Hertz?