The last GOP shutdown cost over $11 billion in economic losses. Other losses were unquantifiable because the GOP suppresses data gathering.
https://en.m.wikipedia.org/wiki/2018%E2%80%932019_United_States_federal_government_shutdown
https://en.m.wikipedia.org/wiki/Government_shutdowns_in_the_United_States
Toying with a global financial crisis, just for the lolz.