I have been to Las Vegas twice, and the only magic shops you will see there are. Houdini Magic Shop. They are in the MGM Grand, Venetian, New York New York, Circus Circus and that is all I have to say.
Mike
When I was in Las Vegas I went to the Wynn casino and I bought the remaining brown Wynn's(which are out of print) and the red and blue Wynn's are not rare and they are still being printed in Las Vegas. And no some websites are selling Wynn's but they have an unlimited supply.
Mike