Cost the earth
Meaning
Be extremely expensive.
Usage
Used to scold big spenders.
Origin & History
Origins and dates here are approximate summaries. Many idioms have disputed or unknown origins, and not every date has been checked against a historical dictionary, so treat specific dates and stories as a starting point rather than a citation.
Imagery equating cost with the entire planet.
British idiom from the 19th century criticizing extravagance.