Seems bitmain removed the U3 from their page?
Edit: found the
page via google, says they're sold out. Wonder if they've discontinued the product..?
Edit2: email from bitmain: "It may open sale again later, pay attention to our website for update."
Actually you can get the U3 immediately via eBay (seller bitshopper) for around 80 Euro. Shipping took around 3 days.
The Miner is already in germany (Europe).
And the shipping from bitshopper was at least to germany
NOT 32 Euro. I paid for the shipping around 6 Euro.
So save money and time and google for the required information