The cost to ship from USA to Ireland, when including the freight insurance on US$1000, is not cheap.
A Fedex quote is US$204 for shipping, Ireland import tax/duty, and insurance.
That's almost equal to the Ireland VAT.
That still leaves you looking at laptops in the US$800 range, which is still not considered a "gaming laptop".
One note, in a few weeks, Acer has the M3 Ultrabook coming out with the nVIdia 640M GPU, which will run BF2

R, but not arma2, and it'll be in this price range.
Any other latop you find with a 640M will also be viable for BF2

R, but not for newer games, and wil be in the same price range.