More info on travelocity being lowest-cost hotel booking engine please

I am a commercial analyst for Thomson cities and regularly monitor the major players; Travelocity, Expedia and Octopus. I find thomson Cities to be the lowest-cost hotel booking engine for the top-selling resorts. It is also important to remember that in general Travelocity like Expedia do not include breakfast in their prices. Thomson cities do, and are cheaper! Please could I get more information on the study, or perhaps a contact. Thanks