If it was not listed for fees in the ad .then you are in no way obligated to pay this .
If you don't want to pay ,then donot if he does not agree .he has to give you a full refund .for you fullfilled your end of the bargain.
If you don't want to pay ,then donot if he does not agree .he has to give you a full refund .for you fullfilled your end of the bargain.