Travelzoo is a global media commerce company. With more than 28 million members in North America, Europe and Asia Pacific, and 25 offices worldwide, Travelzoo® publishes offers from more than 2,000 travel, entertainment and local companies. Travelzoo's deal experts review offers to find the best deals and confirm their true value.
While it does cost companies money to have their deals listed on Travelzoo, no amount of money ensures that a deal will get listed. Source