what they sell is garbage, Its not hemp or marijuana of any kind, its usually a blend of a bunch of crap [spearmint, catnip etc.] Some of it is pressed into "bud" looking little nuggets and they add other stuff [dyes and shit] to make it look more appealing. TRASH!!!!!
But if ya wanna try something legal that will have an effect, try salvia D. That stuff is trippy. And to my understanding it's legal everywhere but Australia. But be warned, It is NOTHING LIKE WEED. Its more of a hallucinogen. I didn't really care for it. But if you try it don't do it alone, get a buddy.
Good Luck and have fun