Nevada became the fifth state to start selling pot to the public on Saturday. Weed fans celebrated as those living in Sin City that are 21 years or older with a valid ID can now buy up to an ounce of marijuana. Hundreds of eager customers endured triple-digit temperatures while waiting in line at the dispensaries. The state licenced 44 pot dispensaries with 39 of them being located in Las Vegas, where the br demand is highest.