Starwest has good quality herbs and they have the schisandra powder for $9.83 per pound for the wild crafted, which I really prefer over "organic".  Organic is pretty much an overpriced rip off.  You are really only paying for the name.  Organic items are still often irrigated with surface water, which is going to be contaminated.  They have higher bacterial and fungal counts.  And if they are farm raised they are not as stressed by nature, so they do not develop as high of levels of phytochemicals.  Wild crafted herbs are watered from rain and snow, which is cleaner.  And they have lower microbial counts due to their higher levels of phytochemicals.  So I ALWAYS go with wild crafted whenever possible.

http://www.starwest-botanicals.com/category/schisandra-berries/