I'd like to know if this 300k cost is per member or if the FC just has to pay an additional 300k to unlock it for all members?

I find it still a bit unfair that large and medium houses have really no real benefits to them over the small houses. Item limit at 150 and 200 is not enough, and now we don't even have any free rooms after paying 60 million for it. If each individual member has to pay and we have around 100 members, we have to collectively pay an additional 30 million just for rooms then? That doesn't seem right to me.