To be honest, Xialla is right at least about ROI 
In Ukraine 1 kw/Hour costs 0.05$, but using http://mining.thegenesisblock.com/a/6702612f21 I see that my ~4000$ for Saturn never go back to me 
So what can say people from Hawaii where 1 kw/Hour cost near 0.40$??? 
In Ukraine 1 kw/Hour costs 0.05$, but using http://mining.thegenesisblock.com/a/6702612f21 I see that my ~4000$ for Saturn never go back to me So what can say people from Hawaii where 1 kw/Hour cost near 0.40$??? here is about ~0.25$ and I paid ~85$ for Jupiter (VAT+shipping). Even if I will receive miner right now and Jupiter will be 500, I will never get my BTC back (because extreme diff raise in upcoming 2 months)
http://mining.thegenesisblock.com/a/a380b4404c
The russians...