Cut his arms and break his legs
The bidding to compete for the slave continued to increase madly. In less than a minute, the initial value of three thousand gold coins rose to thirty thousand gold coins. That is, the initial value was multiplied tenfold.
The people in the common chairs were running wildly over the slaves, they would have no other chance to bid if the people from the Adventurers Agency arrived. They were bidding just to increase the value. Customers in the VIP area did not join in the bidding because they thought a little and decided not to.
Everyone at the scene knows that someone from the Adventurers Agency will show up at the auction to take the slave. They always do this to people who fail at the Challenge Wall and who manage to escape with their lives.
As this will actually happen, it is better to increase the price of the slave and let the agency pay more for the slave.