YOU SAID:

What do I think he would of payed for this

INTO JAPANESE

彼はこれに何を払ったと思いますか？

BACK INTO ENGLISH

What do you think he paid for this?

INTO JAPANESE

彼は何の代償を払ったと思う？

BACK INTO ENGLISH

What do you think he paid for it?

INTO JAPANESE

彼は何の代償を払ったと思う？