Probably a combo of things:

1) Prices in the US don’t include tax.

2) Ireland is also an expensive place to purchase a car because of VRT. RAV4 PHEV is €47k in Germany for example.

3) Lastly, could be some spec differences between the cars that account for a difference, as in my experience, cars in Ireland aren’t always the same specs/trim as other areas (but I could be wrong about Toyota, I don’t know).