They have that for housing in China too. Usually when a new building of condos is for sale, only the first 100 (or however many there are) customers can buy it,

They have that for housing in China too. Usually when a new building of condos is for sale, only the first 100 (or however many there are) customers can buy it, so a few days before they open the office, a lot of people would line up and sell their spots to real potential condo buyers.