A lot of countries have "de minimus" thresholds below which an individual can import duty-free. In the US for reference, it's $800, but other countries have other limits. If you're over that limit, either the product needs to be delivered duty paid (DDP) by the importer or if it is un-paid, the end recipient has to jump through some hoops to pay, with varying complexity in different countries.

Trade logistics is an interesting challenge, and one we want to solve so our customers don't have to... That is part of why we're introducing new regions in phases.