for those who are still looking for the usb, this is probably the cheapest place.
120US + free shipping internationally
http://cgi.ebay.com/preorder-NEXT-LE...QQcmdZViewItem
http://cgi.ebay.com/preorder-NEXT-LE...QQcmdZViewItem
there was 2 for $99US this morning, they selling 2 at a time from the look of things and just raised it and probably continue to rise.
not sure how many they got left.