Why was there so much money in the case of Stanley Yelnats?

In the story "Holes" by Louis Sachar, the money in Stanley Yelnats' case is linked to a family curse and a hidden treasure. The Yelnats family has experienced bad luck for generations due to a curse placed on them, but the discovery of the treasure belonging to the outlaw Kissin' Kate Barlow ultimately leads to the resolution of this curse. The money symbolizes not only wealth but also the breaking of the cycle of misfortune that has plagued Stanley's family.