premium

nouns

payment for insurance
the amount that something in scarce supply is valued above its nominal value
"they paid a premium for access to water"
is a type of (narrower)
the amount (of money or goods or services) that is considered to be a fair equivalent for something else
"he tried to estimate the value of the produce at normal prices"
a fee charged for exchanging currencies
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"
is a type of (narrower)
something given for victory or superiority in a contest or competition or for winning a lottery
"the prize was a free trip to Europe"
is a type of (narrower)
an additional payment (or other remuneration) to employees as a means of increasing output
payment or reward (especially from a government) for acts such as catching criminals or killing predatory animals or enlisting in the military

adjectives

having or reflecting superior quality or value
"premium gasoline at a premium price"
is similar to
of high or superior quality or performance
"superior wisdom derived from experience"; "superior math students"