Is it not more cost effective to purchase three S3 units ?
According to the S3 prices listed here:
https://bitcointalk.org/index.php?topic=514758.0(3X) QTY. Bitmain S3 units will run you $1,873.5. Then you have to purchase power supplies and also you have shipping cost and time to wait for the units to be shipped from China.
We are currently only selling units that we have in stock in the United States. Lost days for a week of time to ship from mainland China should also be accounted for. We are a registered company based in Alexandria, Virginia. Just across the potomac river from Washington, D.C. Come and visit us please! ;-)