The phrase "huge sums" refers to a significant amount of money, often used in the context of large amounts being spent or earned. It can also imply that the sum is so large it seems almost unbelievable.
Case in point are medical emergencies where one may be in need of huge sums of money at a go. (nation21loans.com)
Until now, the companies paid huge sums for exclusive distribution within each hospital. (amotherinisrael.com)
I think the frequency of questioning has increased because midsize law firms are trying to understand how best to win big cases without spending huge sums of money. (a2lc.com)