The only place I know of (when I looked when it first came out) that ships the T3 to the US (besides some eBay sellers) is ShopEreaders. You'll pay a $50 premium plus about $15-$20 in shipping, but they'll send you one.
http://www.shopereaders.com/Sony-PRS...ony-prs-t3.htm
I'd kinda wanted one, but not bad enough to pay the premium.