Why would people sell regular mushrooms laced with a substance that is in all likelihood harder to get and more expensive than magic mushrooms which can be grown by anyone?
I don’t know about obtaining LSD, but growing mushrooms is not all that easy. You have to ensure that the substrate on which you grow them is free of contaminants, because psilocybe mushrooms tend to be sensitive, and can easily succumb to local moulds. In addition, it takes a few months of keeping them at the right moisture level to produce a healthy crop, during which many things might go wrong. It might very well be more cost-effective to buy grocery-store dehydrated mushrooms and lace them with a few drops of LSD than to go through the hassle of learning how to grow your own shrooms.
I've never tried mushrooms, but the last time I looked at their prices on the dark net markets (probably 2-4 months ago) they were costing ~$20 for what I'm told would be a dose equivalent to ~100ug of LSD. I was buying ~115ug LSD blotters at $3-4 each. Can certainly see based on those prices why it could be profitable to do so.
That said I know that the magic mushrooms pricing was thought by everyone to be massively inflated due to lack of supply at that time, so possibly it was a temporary situation.
http://en.wikipedia.org/wiki/Lysergic_acid_diethylamide#Econ...