The usual truth is that labor costs more in the US than it does anywhere else. A lot of things are just what you get if you have cheap labor. As an example, all over South Asia you can get top-notch personal cooking and cleaning on a daily basis. In the US you cannot. It's because everyone is rich in the US. The embodied cost of labor in everything you get is quite a large fraction.

The median household income in Poland is a quarter that of the US.