Snake River Gold brisket at Killen’s Barbecue in Houston, which goes for $30 a pound. Seeking to improve quality, barbecue maestro Ronnie Killen recently changed brisket suppliers and is now paying so much for raw brisket that he doesn’t make any money on the final, smoked product. “If it means selling brisket for no profit, then that’s what it means,” Killen said on the Houston Chronicle’s BBQ State of Mind podcast Wednesday. “I don’t care.” Killen operates the popular Killen’s Barbecue in suburban Houston. He said on the podcast that he now pays $9.35 a pound for brisket supplied by…