Unfortunately replacement cost is a misnomer. When you have something that works and that you trust to replace it with the same year (unless it is new) is not the same. Had a truck written off years ago that I still miss, I could trust that truck 110%, insurance said replacement cost was $3000.00 but all the trucks of the same year were run into the ground.
Hope they get everything back to new condition for you, sounds like only the door will be something that could cause leaks as the rest is inside so that is not too bad.