Hi @Alice-and-Jeff0,
As far as I know (I could be wrong though): The original inquiry price will stand, when the hosts pre-approves the inquiry.
When the guest decides to send a booking request, after an initial inquiry (without a pre-approval). It will use the current (higher) price.
Obviously trying to change the price in the calendar - after a booking request has been send. Is not even possible.
And the host would have to use a reservation change - to get a higher price. Obviously the guest will most likely not appreciate this.