Depends on what the tariffs are about. If there’s a tariff on a specific category of finished consumer goods, an import of the materials/ parts in combination with a local assembly might indeed reduce or avoid the taxes you have to pay.

Not to forget these crazy machines that’ll give you free money if you smash in one of those weird plastic thingys from your purse. Absolutely bonkers!

If it’s published under GPL which I think is the case, everyone is free to use it commercially and sell it. If someone is willing to pay for it, is a different story. ;)