i know the amount sounds high but it is true. i can prove it but I don't know how to prove it here so I managed to find an article:

s://.straitstimes.com/singapore/interns-in-singapore-can-get-up-to-5k-monthly-data-shows

5k is not the highest, there are those who earn even more.

no doubt these are just a handful, but they do exist.