Sales of certain precursors to make LSD have been restricted, which is why it's very hard to find acid in most places. Basically anyone can get acid where they live but they somehow have to find someone within a chain of distribution for acid, which means you are blessed, which isn't very many. The scale of production for acid has been far less, and is made usually for only 10000 rather than everyone possible.

It'll be interesting to find out if the supply of meth will dwindle since sales of Ephedrine are now restricted.