Cost a pretty penny
Meaning
Be quite expensive.
Usage
Used when discussing purchases or investments.
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.
Refers to pennies as currency, so something costs many pennies.
Appears in English literature from the 19th century.