You do realize that you can order all kinds of things on Alibaba? Or even, just from the internet? I was importing small PCBs and components from china when I

You do realize that you can order all kinds of things on Alibaba? Or even, just from the internet? I was importing small PCBs and components from china when I was 15. Most of the time the seller would write "gift" on the package. If the seller writes "wifi router" on the box, is customs gonna doubt it? Sure, one in every X should be getting checked by whatever department looks out for "dangerous electronics" but it's easier than you think. If no american is shipping boats of these into ports to sell, I doubt customs even looked at this person's small box with one device in it.