I think this is all just a plan to try and take away money from the richest people in the economy as housing at the moment doesn't provide any major benefits currently but will be expanded on in further patches. After 90 days the land will most likely hit their half price and only a few more will sell. I assume at this point they are going to check the gil on the servers and heavily modify the prices based on availability and remaining gil on the economy.

Perhaps with the huge costs of land on some servers they are trying to push some FC's onto a cheaper server and spread population more evenly too (not to mention the additional cash they would generate from the server transfer fees)

I am disappointed as I feel they have excluded the majority from this content immediately when they had announced it as a supposed popular casual feature.

Or Square-Enix just screwed up which I think is most likely.