I stand corrected on one aspect of my earlier posts. SP10 by Spondoolies seems like a slim margin of profit is possible; since the price of bitcoin now is almost $600. At this price, it is slightly better to buy the machine + pay for electric bills than to just buy coins outright. However, upon reading reviews, it sounds like the SP10 is much louder than other miners and some people have buyer's remorse over the noise.
Do you know if this is still the case? and if so how much is the miner again?
SP10 is $2,800 for 1.4 T/H. According to the cex.io calculator, set at 30% difficulty increase per month, a 1.4 T/H miner will get you about 5 btcs before the electric costs equal the profit made by the machine(if the price of bitcoin goes up, then you can run the machine longer). Right now, you can just buy 4.8 btcs with $2,800 without paying for the electric bill or dealing with the noise or heat. So, no, I do not believe it is profitable to buy the miner anymore.
