87 XJ6 wheels

I am in the process of purchasing an 87 XJ6 which has some incredibly nice wire wheels on it but believe it or not I would like to put some original wheels on it. I know someone who has a set that looks like new that he took of his 87 when he bought it new. They look newer than the wire wheels !
Anyway, what would be a fair price for the original wheels ?

Thanks ,
Gary

While we are on the subject what would the jag wire wheels sell for ?