It's funny how people still prefer the units over their money back. I suggest some math and taking a look at the difficulty development over the past months as a comparison.
Its funny how people still want force others to simply give up mining... what do you know how much mining costs other people have?? Have you a time machine so you can be sure that singles dont mine their 9.5BTC refund??
I was told so many times that in June 2011 everyone should simply buy BTC and not mining gear... I bought a rig for 1100.. at that time this amount had got me 50 BTC.. I mined nearly 600 with it.. so i dont listen to anyone who dont know a shit about my running costs and whats my goal in mining...
That is bizarre that people would say that. That was one of the most profitable periods of mining when BTC spiked above $20 in value. There would be no math available that could demonstrate that a rig would not earn substantial sums of BTC.
You might be thinking of November of 2011, when the price dropped below $3. In that case, investing in new rigs or even running them was not profitable for some. It would be easy to demonstrate that running a rig for $3 worth of electricity to generate 1 BTC worth less than $3 was not a good idea. During that period, I turned off my GPUs and simply bought the same BTC I would have generated (but paid a bit less for it). Yay for $0.32 kWh
