But this is two ways, right? Not only sales from UK to EU but also if somebody in the EU wants to sell something to someone in the UK? So it works both ways I am afraid :-(

-- GarfieldModular

I don't know how exactly taxes are handled within the Kingdom. But I guess so. Maybe @Kel_ can help out here and clarify that. It still feels a bit silly how trading modules back and forth now would make them become more and more expensive with every new owner in the chain, instead of less.