There are two types of lock off units. It is very important to determine which type you are buying. A lock off unit allows you unit to be used for two weeks of vacationing. You may use one week at the resort and exchange one week someplace else. You may use one week and rent out one week. Generally if you own a 2 bedroom lock off you will trade for two one bedroom units. Sometimes the lock off side does not trade through the exchange company. It is important to check with the exchange company to make sure you are buying an exchangeable lock off.