if you think people are not dumb enough to buy mourne for 600 points,you are stupid,there are tons of stupid rich kids who will get parents money and buy thing they don't deserve in any form,and will rekt your *** in either pvp and pve...mourne is designed to be deserverd and reaaaaaaaaally rare. No legendaryes in stores,please,don't do that mistake...
and yes,some BiS are already obtainable,but they are also expensive and kinda,easly obtainable...mourne is not easly obtainable...same thing for valanyr...