Depending on where u are from ....they could be FREE!! We go out and pick our own..I guess if u live in a city where there are no cows around u will have to buy them as Johnny suggested...we prepare them by boiling them and adding grape koolaid to the juices...they are somewhat like acid..well the whole hallucination part..they last about 1/3 of the time frame though. I have never had acid and of course when I wanna try it its DRY!..but someone who was on shrooms with me said the ones we had were a LOT like acid. Hope this helps