I want to leave my current FC as soon as possible but rooms in this game are not bound to the characters for some reason. Why it has to work like that? Didn't they said that they'll make it possible to move the room? It's been more than a year already IIRC.
not that i saw was it ever said that this was going to be a thing. the rooms are a gil sink, so i doubt the cost will ever be removed/eased/changed in the way you are asking.
I don't mind paying 300k for a new chamber but, moving all the furnitures and reinstalling them will be a huge pain.
Maybe I'll just wait for the mansion system and have a room there, since I don't want to repeat the same mistake by having a room in FC house.