According to WD:
http://wdlabs.wd.com/products/wd-pidrive-314gb/
> Sold in US, UK, Austria, Belgium, Bulgaria, Croatia, Cypress, Czech Republic, Denmark, Estonia, Finland, Greece, Hungary, Ireland, Latvia, Lithuania, Luxembourg, Malta, Poland, Portugal, Romania, Slovakia,Slovenia, Sweden.
Try the link on that page, instead of Ars Technica's link to the US store: http://store.wdc.com/promo/97047600