That's $7.83 btw - .50 for electric = $7.33/Day (for now). I spent $430.55 (0.69225BTC after 7.7% refund, not received yet) for 1 S3 miner. Raw math puts ROI @ < 60Days, BUT.. we all know difficulty will have an affect. Averaging difficulty increases @ 10% stretches ROI (including electricity) to 83-85 Days, with a NET profit of .10BTC within 100 Days. .1 / .69225 = 14% PROFIT in 100 Days, anything out there doing that legit? Outside of cash cropping in a few states I think NOT!!

I will grant you too many more 20% jumps and that whole theory goes out the door, but even if it went 365 to make 14% that is better than ANYWHERE for a < $500 in.