Wiz Khalifa doesn't pay for weed. He smokes it for free, because he's sponsored by The Cookie Company, who sell a strain called Khalifa Kush. In exchange for putting his name on it, they give him all the bud he wants, which makes him one happy Khalifa.
The Cookie Company needs to do a better job nourishing and clothing Wiz Khalifa, though. There's no reason he should be in rags on TV, looking like he's another skipped meal away from the ER.
Call a congressman, embargo their shops, do whatever rap activism you must to protest the treatment of this Khalifa by The Cookie Company.
The Cookie Company. What a deceptive name.