While U.S. hotel room revenue rose 7.3%, to $145.4 billion, last year, transaction costs in the form of commissions and wholesale room discounts rose 10%, to $25 billion, according to a study undertaken by Kalibri Labs at the behest of the American Hotel & Lodging Association (AH&LA). Meanwhile, the percentage of bookings for U.S. hotels with room rates of more than $100 a night that were handled through an OTA, a GDS, a travel agent or a travel wholesaler rose to 27% last year from 19% in 2011, indicating a 40% surge in indirect bookings over the last five years, according to the 62-page report. With an OTA reservation costing a hotel as much as 25% of room revenue, such a shift has spurred a raft of campaigns promoting direct booking, offering discounts and value-adds to loyalty members who book through hotel websites and call centers. Get the full story at Travel Weekly Read also "Hotel direct booking campaigns won’t hurt Priceline and Expedia says study"