Re: [Antminer S1 Sales open] Price changes daily, now 0.893 BTC for 180GH/s
I'm running 17% HW at stock 
It might be worth pointing out that the HW errors that the ANT reports on the status page are Diff1, so you have to do more math than normal. Check out this calculator: http://www.coincadence.com/antminer-s1-hardware-error/
Cheers.
That yields a Hardware Error Rate of 0.14873012822 %
I wouldn't sweat it, then!