The average amount spent on a child per year is 17k [1]. It may not be that much if you're making $200k+/yr, but on the median household income of $71k/yr [2], it's a pretty significant chunk — about ~24% of your income for just one child.
[1] https://www.washingtonpost.com/business/interactive/2022/cos...
[2] https://www.census.gov/library/publications/2022/demo/p60-27...