I don't know if you've ever booked a flight on Frontier bit they are very good about letting you know about fees, you have to say no to things like carry-ons checked bags and seats. When you say no a screen pops up telling you what saying no means and that fees could be higher at the airport. That being said people these days either don't pay attention or only see what they want to see. In addition to repairing and maintaining computers part time, I also work at a big box retailer as a Cashier to make ends meet. The things I've seen people do is amazing. One that is relevant in this case is that one of the self checkout lanes wasn't accepting cash because there was an issue. Even with 2 decent size signs AND a prompt that you had to say yes to, I still have several people dumbfounded, "I'm putting cash in but it's not taking it".