No! If you start paying for them, someone will start raising them. I thought about starting a rumor that smoking kudzu makes you high, to get people to dig it up, but a friend observed that would make people plant more of it. It would be the same with snakehead.
Mike
A late friend's dad was county agent in Tallapoosa County. He had the distinction of introducing kudzu and terracing to the county to control erosion. I read decades ago that the best way to rotate one's crop of kudzu on one's property was to sell it (the land) and buy another piece of land and not plant it again. Gil