Buy Harley from Poland?

Hello, I’ve driven several years Japanese models, e.g. 1300 Honda. Now I want to fulfill my dream of a Harley as “the next fifties”. I’ve already made myself aware of what there are for models and what they also cost. Of course I was already in a number of biker stores. My wish would be a Heritage Classic or the Anniversary from year 2003 with up to 30000 km. Cost point would be here in Germany so at about 13-15000,-€. So I know that. I have discovered a Harley in Poland now and the price is, as with the above mentioned data, far below German prices. My question to you, since I have no idea at all whether you can buy in EU countries, Poland, without any concerns. Maybe someone has already bought in Poland. Or better let your fingers off? What should/must I consider when buying. Should I actually pay VAT? Many thanks already in advance and many greetings, Gerd