Yapta this month rolled out its RoomIQ hotel rate assurance product, claiming that in beta it saved clients $109 per stay. Like TripBam's, the service beats rates for existing reservations and alerts travelers or their agents to the rebooking opportunity. Clients can calculate agency processing fees into rate comparisons. Both firms charge transaction fees, while TripBam offers the option of charging a percentage of accepted savings.

Meanwhile, WorldMate last year added Price Alerts and Counter Offers to its mobile itinerary and hotel booking app. The service notifies users of cheaper rates based on their itineraries. They can touch a . . .

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