YOU SAID:

That will cost a arm and a leg.

INTO JAPANESE

そうなると腕と足がかかります。

BACK INTO ENGLISH

It takes an arm and a leg.

INTO JAPANESE

腕と足が必要です。

BACK INTO ENGLISH

I need arms and legs.

INTO JAPANESE

腕と足が必要です。

BACK INTO ENGLISH

I need arms and legs.