I have a Bitfury mining rig with a 16-slot v2.1 M-board and 4 hashing cards to sell. Looking to get at least $3500 for it - please PM me your offers and I will send you details.
Those who know these rigs know that they can be expanded to hash at over 500 gh/s by buying more hashing cards, which are in stock at MegaBigPower.com. The unit will come with the M-board, 4 H-boards and the raspberry pi pre-configured with the software, but without the ATX power supply. I can give you a link to the setup guide for these on the forum if needed. I recommend a 650 watt ATX PSU for it, unless you intend to load up all 16 slots in which case I'd go with an 850 watt PSU.
Note: This offer automatically expires Dec 24th at noon U.S. Eastern time. Please don't PM me offers after that date/time.