And the buy button just went live, despite the large expense, I wonder how long until they sell out of batch #1? I just made a table of the BTC/GH of my purchase from Bitmain, they -really- seem to like 1.47 BTC/TH on average, except that these cost almost the same per TH as my S3s did in July of 2014, and although they use fewer Watts/TH, a TH is worth a lot less. Today I'll flesh out my spreadsheet to include relative W/TH and percent/TH worth as compared to my S1s that I bought in April of last year. Altogether though, any purchase of new hardware where your ROI extends out past July of 2016's halving really doesn't make sense at this point.

Miner Cost Calculations

BTC   Quantity   GH   BTC/GH   Description   Date 2.697   3   180   0.0049944444   Antminer S1   2014-04-09 6.75   9   441   0.0017006803   Antminer S3   2014-07-16 4.62   7   441   0.0014965986   Antminer S3   2014-08-11 1.16   2   453   0.0012803532   Antminer S3+   2014-08-22 2.616   4   453   0.0014437086   Antminer S3+   2014-10-16 7.583   15   453   0.0011159676   Antminer S3+   2014-11-17 3.727   2   1155   0.0016134199   Antminer S5   2015-05-25 8.169   1   4860   0.0016808642   Antminer S7   2015-09-30