We have just replaced the machines in our mine and are placing them up for sale, reasonable offers will be accepted. Bulk sales can be done on all units and will be taken into consideration prior to individual or smaller sales. The Bitmain S2 power supplies have been removed, but arrangements can be made to include them if available.
Various power supplies are also available, however not all may have a full set of cables, Seasonic 750W, OCZ1000W, and OCZ1100W.
The SP20's are only an interest check as they belong to a client and he has not made a final decision on selling them.
Pictures:
http://imgur.com/a/UBehILocal pickup is available and preferred, in the Wenatchee, Washington area.
5-6 SP31s are faulty or nonworking and also available for purchase.