I read your comment as 'Given USPS can send a package over 4000km in the same country, let's compare that with international charges in Switzerland'¹. Is that correct? Because that would be a liiiittle bit misleading in my world and I'd like to compare Swiss international charges with a USPS delivery from New York to Reykjavik please.
① Apologies if that isn't the case. But 4000km just felt too close to the east coast to west coast distance.
How much cost/time does it cost Swiss Post to ship a package 4000km ?
It's at least 3x the price of USPS:
https://www.post.ch/en/private/a-z-of-subjects/prices-sendin...