I bought my first batch of salvia from my local head shop and it was 19 for half a gram of 15x. Tried it and got a pretty good experiance but not nearly as intense as I thought. Then I started lookin around ebay and bought a full gram of 20x for less then 8 dollar's and that included shipping. I took one good hit out of my bong and was in another world for about 15 mins. There's some people on ebay that sell it as an incense but it definetly worked for me. Peace