Anyone in a smoking community would love not to pay for their herb; However, in most cases it's impossible for most people.
There is a person in this world, who gets his pot for free. The lucky one is Wiz Khalifa! Check out Wiz Khalifa's interview, where he proudly announced that he never pays for his smoke. He got a sponsorship from The Cookie Company, who pays for all his herb, just for having a strain named after the singer.