Individuals interested in purchasing Blue Meanies shroom spores for collecting or cultivating should have no issue finding vendors who carry them. This is one of the most popular and sought-after strains of magic mushrooms, so most major retailers keep them in stock.
If you live in the US, Ralphster’s Spores is probably your best bet, as the company has a history of reliability. You can also check out High Desert Spores (often, but not always in stock).
If you live in Canada, Sporeslab will be one of the best resources for buying Blue Meanies spores, but you can also check out Spore Door or Spores 101.
If you live in Europe, Kosmic Kitchen carries Blue Meanies spores. You can also check The Magic Mushrooms Shop or Viking Spore as alternative sources.