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

Origin notes can vary by region and source; this page gives the commonly reported explanation and usage context.

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.