would give your right arm for

give (one's) right arm

A figurative phrase that highlights one's interest in having something or eagerness to do something. A: "I'm going to the concert on Saturday!" B: "Aw man, I would give my right arm to have tickets to that!" I would give my right arm for your sister's gorgeous hair!

See also: arm, give, right

would give your right arm for

be willing to pay a high price for; greatly desire to have or do. informal

See also: arm, give, right