I wouldn't be overly happy buying those TV's from mainland Europe. Regardless of the panel used, they are poor quality sets in general and far more likely to fail than better built models. Which is fine because you get what you pay for, but you can get very cheap brand 4K TV's here for not a huge amount more, and if something goes wrong you can easily return it.
Curry's for example have a 49" JVC 4K for €370 - that's just €70 in the difference when you factor in delivery. The JTC may have a better panel but it's far more of a headache if something goes wrong at any point. Especially if you're using parcel forwarding services to buy from sites that don't ship to Ireland, then you are effectively buying a 2nd hand TV as there's no realistic warranty.
If they develop a fault under warranty then the seller has to pay for shipping within the EU. I'll not hold my breath for them to develop a fault though.