Nuclear fuel, known to the wise under an arcane name of Isotope 511, is used to power all advanced technology of the Star Gods Empire, like space vessels or energy weapons. While we Earthlings do not know their inner workings, the entire society of Empire-ruled Earth depends on their use. Try to seize your prey while landed to assure securing it.
Hellerium, especially in the form of fallout, is also important for many creatures, including us, which have learned to metabolize it and thus break normal constraints of physiology. Hellerium is said to naturally occur on some extrasolar planets.
>Value: $12k.