"No money, can't buy, I'll buy it next time." Of course, the Great Sky Rank wanted it, but after checking his wallet and estimating the value of the Seven-star Whip, he decided not to get it in the end.
He could buy it, but it would affect his own system after buying it.
In terms of strength and potential, he chose the latter.
After all, buying the Seven-star Whip when he's richer later on isn't too late. If he really took out things related to his system, affecting his own growth would be a loss.
As a top player, he understands the need to give and take and the planning for himself. The Seven-star Whip is more of a bonus to him, no matter how strong it is. Compared to the Shura who can just kill to solve problems, some of the instances the Great Sky Rank experiences require puzzle-solving, and force would reduce the score. Of course, it was Cui Yingying doing the puzzle-solving while he was responsible for the fighting.
