CARE DONT BUY THIS!!!
or any other asic for coins most of the valuable ones will imho hard fork this month and all the people will be stuck with a coin that jihan will only use something like BitcoinTrash!
i will only say one think D3 antminer!
I think Bitmain probably is not expecting to sell many of these and that's why they "limited" buying to 1 per customer.
My bet is so they can protect their customers from making idiotic decisions and buying $50k woth of these and then not ROI'ing.