It's definitely good to know how to do it. This guy shares his anecdote and it's worth pointing out while UPS made an error there is plenty of responsibility that can be taken by the buyer and seller when importing. Don't put your life and finances in the hands of someone else like a chump if you can avoid it. The buyer can request/urge the seller to properly declare items (e.g. as used vintage computer parts), and the seller can declare items and prices clearly. The buyer can also pre-clear with customs (this is more advanced, level 2, but Customs has been investing a lot into making pre-clear process easy and useful)