@mntmn It's called "stealing".

@mntmn idea: don't ship to the US

@mntmn The carriers (including the US Postal Service) charge additional "brokerage fees" for collecting the tariff. I don't think there is any way to appeal.
I recommend not selling anything into the USA, nor buying anything from the USA.
I'm speaking as a US citizen. The only way to fight this stupidity is to make US citizens so angry that we demand an end to these tariffs, and reinstatement of the de minimis exemption, and then vote Cheeto Benito out of office

we'll look into UPS global checkout API to see if we can pre "land" the costs, it will take a little while to implement though https://docs.globalcheckout.ups.com/ups-global-checkout/landed-cost/calculate-landed-cost

(my key accounter at UPS in germany can also not explain it nor access the invoices)