I immediately contacted Airbnb to tell them what had happened, they apologised. Not only is that practice misleading to users and other hosts in the area, but I'm pretty sure it is illegal. The stock offer in the Mediterranean is very poor at Airbnb.
We finally went for a hotel, where the price was the one advertised. I haven't lost faith in Airbnb's business model, but unless they show they are out their catching fraudsters and other scams artists, I doubt I'll go back any time soon.
The unique aspect of AirBnB to me is when regular people who aren't in the professional hospitality business are renting out a spare room, or renting out their apartment when they're gone. But you rarely find those in places like Majorca; that's more for if you're visiting somewhere with a bigger population of actual residents, like Seattle or Athens.
firefox: https://addons.mozilla.org/en-US/firefox/addon/image-search-...
chromium: https://chrome.google.com/webstore/detail/image-search-optio...
It handles Tineye, Google, Yandex, Baidu, and others via right-click menu.
Agree that AirBNB is quite good at taking them down pretty fast, and I reported the ones I could see for being misleading.