Yeah, but that doesn't seem to be the case with the Metrum Octave. If you buy it within the EU you get lumped with a 19% tax. If outside the EU, no tax but you 'may' have to pay import duty (some haven't).
http://www.metrum-acoustics.nl/price_list.html
All products sold in EU have tax included in the price, Metrum adds it when you checkout. No difference.