You get bitchslapped by import taxes is what goes on. Can sometimes end up near doubling the price you eventually pay, sometimes the item and the shipping is taxed individually. It depends on ****. Sometimes it even sneaks through without anything extra.
What bluefin covers doesn't matter, only thing that matters is what place it's shipped from. If it's outside the EU, you get tax bitchslapped. It's essentially to keep people from buying stuff way cheaper in other parts of the world and ****ing businesses over here. But that happens anyway. And multinationals are buying up everything here anyway too.
Market globalisation is making more and more of a mockery of separate political states.