Royler didn't need a fight so he told the k-1 negotiator that he would fight sudo only if they can pay more $$$$$$ than one could imagine. In other words, he meant "not interested".
They hang up but called back in minutes to tell royler that they will pay that ridiculous amount of money. Then royler didn't have a reason to decline.
His brother brought a lot of money to k-1, some 17 million USD before tax. Royler got some of that money back from this fight.