well, your quite wrong.
salvia 20x can be bought here for 36.99/gram
And that's for the standardized kind, you can get unstandardized for less

http://www.iamshaman.com

"We infuse pure salvinorin extracted and washed with pure grain alcohol onto carefully crushed organic, pesticide free Hawaiian Salvia leaves, providing a consistent quantity of exactly 50mg of salvinorin per gram for 20 times strength or 20x. No harmful chemicals are used anywhere in the process.

This 20x Standardized Salvia extract is crafted from leaf grown in the Sierra Mazacteca region of Mexico, and the leaf is blessed before it leaves the farm. Salvia extracts are relatively new, but the Salvia divinorum plant has been used medicinally for thousands of years by the Mazatec Indians. Buy Salvia 10x extract from a shop that has been making high quality Salvia products for over 5 years. Because we take great pride in all of our Salvia products, expecially our Salvia 5x, 6x, 10x, and 20x extracts, both standardized and non-standardized, we have a large customer base of returning, loyal customers."