I didn't get mine directly from Poland but I had to do all the importation document stuff.
it's a pain in the arse as you have to do the NOVA thing by post so make sure you get the form sent to you before you start or you'll be sitting on your hands waiting for it to arrive.
It really was stressful but I'm so happy I did it. Feels good to bring another back onto the road.
Polish MOT standards are pretty lax though so if it does have one, it'll probably still need a load of work to get an MOT here.
I guess it would be a matter of driving to Poland with a trailer and picking one up. Sounds fun!