Monarch Cang Yong did not actually mention how much he was willing to pay in order to make amends.
Truthfully, this whole matter was just a pretense made up by World Deity Shen Tu in trying to get out scot free. He was now clear that Xue Ying's combat power far surpassed his expectations. He himself was quite accomplished in the art of survival and escape, but he had fallen under the restrictions of the supervisor envoy residence's arrays, as well as the suppression of the terrifying domain secret skill, leaving him completely unable to flee! Therefore, he began thinking up ways to beg for forgiveness. After all, if he were to die, losing a body wouldn't mean much to him, but losing all of the treasures he had on him would be terrible. It would mean losing his blood-refined Deity warrior and many other valuable items. On top of that, he would have to cultivate another avatar from scratch. Redoing the transformation of his inner world alone would be incredibly expensive.
