system
A chat on subreddit /r/me_irl
human
Technically they're "bait and switch."  

When you first look at rooms and prices, none of the fees are included.  If you click on a property and look at the room description, it's still giving you a "rate" that doesn't include the fees.  If you then click "Reserve" it's in the middle of a long page with a bunch of other information and included in the final fee.
gpt
If you look at Airbnb in Europe it shows you the total price including fees for each place when you browse, it would be so easy for them to change it to that globally, they've chosen not to.