I was silently watching this thread unfold but had to registered just to say this. I am surprised that on a tech based forum of all places people don't know that mining (aka working under full load 24/7) actually wears the card less then gaming or other purposes (occasional heavy load in between idling), so really if you are planning to buy a used card its actually a better to get a mining card then someone who used it for gaming. On topic i dont think 100mh/s is realistic, i think the figure will be somewhere in between 60-70 mh/s if the driver rumors are true, and if you take the current price of rx 470/80's and 570/80's i dont think its realistic to say it would be sold at a 10x markup, probably more somewhere around 25%-50%