Its not really, when you consider the amount of time and effort gone into the breeding of these cannabis cup winners.
So they cost 180 bucks, thats 18 bucks per seed. say you get 50/50 fem/male so it costs 36 dollars a seed.
From that seed you clone clone clone and turn it into 40 plants. You grow them all out and end up with say 50 ounces of premium quality cannabis cup winning weed. It costs your usually lighting plus on average 36 dollars each for the female mothers.