Definition of "Premium" :
noun: payment or reward (especially from a government) for acts such as catching criminals or killing predatory animals or enlisting in the military
noun: a prize, bonus, or award given as an inducement to purchase products, enter competitions initiated by business interests, etc.
"They encouraged customers with a premium for loyal patronage."
noun: payment for insurance
noun: a fee charged for exchanging currencies
noun: the amount that something in scarce supply is valued above its nominal value
"They paid a premium for access to water."
adjective: having or reflecting superior quality or value
"Premium gasoline at a premium price."