Deathstalker Scorpion Venom

There are locations in Africa and the Middle East where you can find the Deathstalker Scorpion, which has a great name. These little creatures are usually less than three inches long, and while their venom is strong enough to make you regret coming into contact with one, it shouldn't be fatal unless you get an allergic reaction.

However, the venom they produce is a remarkable substance, and science is interested in learning more about it. It has demonstrated value in the study of numerous diseases, including diabetes and brain cancers.

The difficulty of obtaining the venom makes it difficult to use it for study. One of these scorpions, at three inches long, is probably not going to generate much. Additionally, you will regret it if you get stung while harvesting it. A grain of sugar-sized drop of venom costs roughly $130. For some reason, if you wanted a gallon of it, you'd spend the entire $39 million limit on your credit card.

A Moroccan business has actually created a machine that can milk scorpions four at a time, and does so much more quickly than humans. This is currently the most costly liquid in the world, but that could change in the future.

• Cost: $39 million per gallon