Just a little bit of info for you, OP. Even completely discounting the cost to power your ASIC, let's take a look at what you'd expect to make if you had that miner in hand right now.
The Antminer S5 will cost you about $378 new from Bitmain (you'll need to add in shipping and a PSU). Let's call it $400 even and pretend you already have a PSU to drive the S5.
At the current difficulty and exchange rate, that S5 would expect to earn you ~$3.12 a day. Even if everything stayed the same (which it won't) you're looking at ~128 days for you to mine back the cost of the miner.
As you factor in electricity costs and difficulty adjustments and exchange rates, that time will change.
The Antminer S5 will cost you about $378 new from Bitmain (you'll need to add in shipping and a PSU). Let's call it $400 even and pretend you already have a PSU to drive the S5.
At the current difficulty and exchange rate, that S5 would expect to earn you ~$3.12 a day. Even if everything stayed the same (which it won't) you're looking at ~128 days for you to mine back the cost of the miner.
As you factor in electricity costs and difficulty adjustments and exchange rates, that time will change.
Difficulty has actually been pretty slow this summer. Lots of low numbers.
I'm sure one day it will jump some more. But for now it really has been a great summer as far as difficulty.
