We have 4 of them for sale. Previously used in our small bitcoin mining operation that consisted of 3 Antminer s7 and 4 Antminer s9. We are no longer mining bitcoins. If you're interested, more info at the link.

http://rent2bit.com/misc/antminer-s9-11-5-ths-used/

We only have 4 so grab them while they last.