8- GHB (Gamma-Hydroxybutyric Acid)
Price: $2,500 per gallon
It’s the thing that your body produces naturally, a substance found in the central nervous system.
In medicine it is used as an anesthetic or used to treat conditions such as insomnia, depression and narcolepsy.
It is also used as a drug that is known as the “liquid ecstasy” but it has nothing to do with ecstasy.
More creative names include “Lollipops”,”Fantasy”, and “Georgia Home Boy”.
Small doses of GHB can cause drowsiness, seizures, vomiting, while a large dose can kill you.
With $2.500 per gallon this is one of the most expensive liquids in the world.