Cost an arm and a leg
Meaning
To be extremely expensive or feel painfully costly.
Usage
Used informally when complaining about prices, repairs, bills, travel, or purchases that feel excessive.
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.
A dramatic sacrifice metaphor: the price is so high it feels like giving up something essential. Popular stories about portrait pricing are often repeated but not well supported.
The idiom became common in 20th-century American English and remains one of the clearest everyday exaggerations for high cost.