After signing up to a trip with agreed price and making 1. payment I understood from the owner the price would change. I got a new offer for the trip with 10-doupled price. I declined the new price and were then told by TripAdvisor, that I lost 1. payment.So in short I lost the deposit because i would not accept a 10-times price increase for a trip!!!I do not expect it is even legal to do this!