YOU SAID:

They can’t be bargained with.

INTO JAPANESE

交渉することはできません。

BACK INTO ENGLISH

It cannot be negotiated.

INTO JAPANESE

交渉はできません。

BACK INTO ENGLISH

It is not negotiable.

INTO JAPANESE

交渉の余地はありません。

BACK INTO ENGLISH

There is no room for negotiation.

INTO JAPANESE

交渉の余地はない。

BACK INTO ENGLISH

There is no room for negotiation.