In my european experience, DHL is anything but fast when customs are involved. And I doubt they have the manpower to handle it for the new US rules.

> These changes will likely have bigger impacts on cheap off the shelf parts from e-commerce places like Temu or AliExpress, who were previously taking advantage of both the de minimis rule and inequal international rates through USPS.

Again in my european experience, the likes of Temu have solved the problem. You just order and a courier shows up with the taxes already handled. You paid Temu for them when you ordered and they paid the taxes for you at the point of entry to the EU.

Unfortunately they probably don't have a similar setup in the US, but they're likely to solve it much faster than DHL.

And of course prices will increase. Will that make them less competitive? Time will tell.