I'm just shy of 1 g\hs and it takes me about 1 month to generate 5 btc at current prices it will net me $230. Thankfully I can do this at work where the electricity is free. The price per coin has gone up a lot recently, like $20 in the past 2 weeks or so. I'd look for it to drop fast soon. No way it can sustain $46 a coin. The last time there was a bubble like this, the price per coin went up to around $30, then dropped to $2 a coin. The alternative to mining of course is buying and selling the coins.