and that they have an on going pro to type here
https://bitcointalksearch.org/topic/black-arrow-r9-12-threads-dz-miners-co-op-plz-move-s-and-discussion-here-328996 hashing made money has bugs
https://bitcointalksearch.org/topic/closedr17x-black-arrow-prospero-x-3-dzmc-exclusive-130-40ghs-335145 you can buy at 130 a share 50 shares
comes to 6500 a miner a small premium .
read carefully both threads. I have 2 shares of this. r17
read the r9 -r12 yeah it is long but it is your money. I have 11 shares of it.
If this is a real company and if the r17 buy is good all older gear sucks.
since i made money on the r9 to r12 . I grabbed some r17. I am on the fence as to purchasing 10 more shares for 400gh