The UK's Competition and Markets Authority had a clamp-down on exactly this last year. https://www.theguardian.com/business/2019/feb/06/hotel-booking-sites-for

The UK's Competition and Markets Authority had a clamp-down on exactly this last year. https://www.theguardian.com/business/2019/feb/06/hotel-booking-sites-forced-to-end-misleading-sales-tactics https://www.theguardian.com/business/2019/feb/06/hotel-booki...