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...