at a premium

at a premium idiom
At a higher price than usual owing to scarcity; also, considered more valuable, held in high esteem. For example, Since that article came out, the firm's stock has been selling at a premium and Space is at a premium in most stores. This idiom uses premium in the sense of “bounty” or “bonus.” [Mid-1800s] Also see put a premium on.

The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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