email response from Innosilicon (A4 miners is open for pre-order now at price of 1800 USD per unit plus shipping fee, 10 units to start, with about 1000W per 260Mhs (+-10% performance variation) each and 30 days parts warranty. Delivery starts from September and max delay is one month.) you would need an order of at least 10 on first come first served, very limited quantities. It is out of my ability to buy right now, just thought I would pass the info on.