So how exactly did you make only $4K?
I forgot some stuff. Also I didn't have 12 GHash/sec until last month. For the whole very profitable month of June I only had 1 GHash/sec.
Here is my cash flow summary for May, 31 till today. The electricity is $0.155 / kWh (Massachusetts).
Stuff bought -$11,671
bitcoins sold 8.821
electricity bought -5,205
bitcoins not sold (hoarded) 2,008
bitcoins scammed (FooDSt4mp) -280
bitcoins lost (disk failure) -21
bitcoins lost (mybitcoin) 26
balance -$6,321
So at today's exchange rate I will finish paying for my computers in about 5 months.
It's not as bad as I thought.
Sam