I'm always thorough when booking flights. I want to save money, I shop around, I don't press the Purchase button until I'm sure. I bought tickets from CheapTickets.com and got a good price. At no point did the website say anything about a $43.98 booking fee, or else I would have gone elsewhere. I noticed the charge sometime later in my credit card account.
I went through the paces of booking a different flight. The webpage did show a field called "Booking Fee" which was shown as "$0" at every stage of the process up through the payment screen.
The phone menu system for CheapTickets kept bringing me to a dead end, with silence, no message, no music, when I followed it for billing issues. I had to call reservations and have them transfer me.
The billing department refused to refund their fraudulent charge. I'm disputing it with my credit card company.