Rhodiola rosea is a lot of varieties but can be used in medicine is not much, not to say that the other no use, just the effect is not so obvious. Plus rhodiola rosea is alpine. There are alpine areas in the south. At present I do not think. So some things are very cheap 20-40 can buy, the problem comes, maybe it is fake maybe there is no medicinal effect, or even refined. I buy them all for 300+ a pound, real alpine areas.