I was under the impression that U.S. law prohibits importatio0n, which is why you don't see them EVER. But here's a pair on eBay, already up over $300 from a seller with no feedback.
http://cgi.ebay.com/Malaysian-Silve...104070541QQcategoryZ66795QQrdZ1QQcmdZViewItem
http://cgi.ebay.com/Malaysian-Silve...104070541QQcategoryZ66795QQrdZ1QQcmdZViewItem