You might want to check out this thread from the FFcobra board. Someone who has #3 slot but not enough cash
http://www.ffcobra.com/ubb/ultimatebb.php?ubb=get_topic;f=1;t=022571
http://www.ffcobra.com/ubb/ultimatebb.php?ubb=get_topic;f=1;t=022571