Upon trying to shorten my long-term reservation, I am prompted to pay an ADDITIONAL SEVERAL HUNDRED dollars. No one at AirBnb Customer Support is able to provide me a clear explanation of where the charges are coming from. Whenever I call, they just say "oh, because of the 30 day cancellation policy," but are unable to provide exact calculations of this price difference. Horrible! Just spouting "it's in the policy" should not be blanket to hide transparency. AirBnb does not know how their own service works! Here I am now, diligently doing the calculations myself to see where the numbers are coming from.