They really work, but they aren't a hallucinogen, so much as a delerient. Totally different from the psilocybe-producing species.
i think thats wrong the Psil. cubensis is your ordinary magic mushroom and youll trip and all that good stuff, i believe its ok to sell them fresh in certain areas of europe. the other ones are different, but dont really cause a delerium i dont believe, and are legit