It does seem odd there is no store in the country when Apple has their European headquarters there. And as I just discovered when checking this, they actually build iMacs in Cork, apparently the only Apple self-operated manufacturing plant in the world.
Apple are only based there for dodgy tax reasons that the EU found out about & ended up costing Apple €13billion, so wasn't quite the saving that had hoped. Same reason Ireland managed to tempt Dell, HP and many other tech companies as well in the past. All very dodgy.