bought one from US. was charged slightly over 100 euro on the import duty.
i bought it from amazon - via an american website that provides postal addresses in US and then ships on - for a charge.
including shipping, the US address and the Irish duty - I still saved a few bob.
i recently bought a lens for the camera from Cameta Camera on ebay.
Cameta Camera turned up as the cheapest result when i searched for the lens on Amazon - thats how I came across them. however, amazon wouldn't post so i tried cameta camera directly. they have an e-bay store. They posted directly to Ireland and I wasn't charged any duty..... The lense was only 250 dollars though.
shop around for the 400 - its the old model now so should be reduced. - also consider buying it 'body only' - the lens that comes with it is pretty shabby - if you can get it cheap with body only, you can buy a decent lens seperatley.