10% discount has been offered to Second Hand S4, 0.3465$/Gh and shipping out within a week after full payment 
This is a good deal people. You cannot buy this much hashing power for this price anywhere in the world. Bitmain consistently out prices everyone. These S4's will be good to run for 10 months at least with underclocking later on. We need 50 more S4's. P.S. Thanks for the rapid PSU replacements. We had several go out right away and Yoshi took care of us fast. GO BITMAIN No offense, but sounds like fan boy speak. How do you know they'll be profitable for 10 months?
Also remember S4s don't work well on all pools.
And they are prone to drive failures because of cheap components.
In other words, you get what you pay for.
M