okay prices drop on gear .
so batch 1 was high price
batch 17 much lower
look at this chart
https://bitcoinwisdom.com/bitcoin/difficulty
Difficulty History
Date Difficulty Change Hash Rate
May 11 2016 194,254,820,283 8.73% 1,390,530,167 GH/s Batch 17 around this date so 194,254,000,000 Much harder to make a block
Apr 28 2016 178,659,257,773 -0.01% 1,278,892,782 GH/s
Apr 14 2016 178,678,307,672 7.09% 1,279,029,147 GH/s
Apr 01 2016 166,851,513,283 0.82% 1,194,369,655 GH/s
Mar 18 2016 165,496,835,118 4.46% 1,184,672,491 GH/s
Mar 04 2016 158,427,203,767 -3.10% 1,134,066,098 GH/s
Feb 19 2016 163,491,654,909 13.44% 1,170,318,852 GH/s
Feb 07 2016 144,116,447,847 20.06% 1,031,625,717 GH/s
Jan 26 2016 120,033,340,651 5.89% 859,232,121 GH/s
Jan 13 2016 113,354,299,801 9.12% 811,421,684 GH/s
Dec 31 2015 103,880,340,815 11.16% 743,604,444 GH/s
Dec 18 2015 93,448,670,796 18.14% 668,931,642 GH/s
Dec 06 2015 79,102,380,900 8.77% 566,236,898 GH/s
Nov 24 2015 72,722,780,643 10.44% 520,569,941 GH/s
Nov 11 2015 65,848,255,180 5.77% 471,360,171 GH/s
Oct 29 2015 62,253,982,450 2.25% 445,631,364 GH/s
Oct 15 2015 60,883,825,480 0.12% 435,823,399 GH/s
Oct 01 2015 60,813,224,039 2.49% 435,318,014 GH/s Batch 1 around this date so 60,000,000,000 Much easier to make a block.
this changes price.
all you need to consider buying gear is to know what your power cost is.
at the moment it is hard to earn money if your post cost is more then 8 cents
Thanks for the answers. And in the country I live I do maths with a running s7 24/7 using 1.4 kw/h I'm going to spend 50$ each one. That's bad or good? So in other ways when the havening happens the difficulty will increase and the new minner the price will decrease.
If a s-7 cost you 50 usd in power each month that is a good price for power.
We are in a transition from s-7 to newer gear.
My suggestion is only buy 1 s-7 and wait for newer gear.
If coins and prices really do poorly from now until August you won't lose a lot of money.
Once new gear comes out I would buy one new piece of gear.
Play with both and if coin do well you will be okay. If coins do poorly you will still not lose much.