There are so many travel deal sites out there now, it can be hard to tell the difference. TripAdvisor is hoping a new $70 million to $80 million TV ad campaign that it plans to roll out later this year can set it apart. The message of the ad campaign, according to executives who spoke on the company’s earnings conference call this week, will be that TripAdvisor is “a great place to find the lowest prices.” But there’s reason to be skeptical about that claim. For years, sites that aggregate hotel listings have shown the same prices for many of the same hotels. Travel news and research site Skift notes that “although plenty of hotel price differences can be found if one takes the time to search on metasearch sites such as TripAdvisor, Google, Trivago, and Kayak, there is a whole lot of price parity as well, and no site always has the lowest prices.” Get the full story at Barron's Read also "Investors happy as TripAdvisor pulls back from struggling Instant Booking"